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Given that the perimeter of the sector is 31.7 cm, find its area. 2/3 Pi B.) B. For more information read our Terms of use & Privacy Policy, And millions of other answers 4U without ads. Area = 1.5/2pi * pi*r^2 the pis cancel leaving. Area of a circle = (pi)*r^2. [2] (ii) Find the perimeter of the shaded region. there are shown sectors of two concentric circles of radii 7 cm and 3.5 cm. So, m ∠ AOB = 90° A sector of a circle is a region bounded by two radii and an arc of the circle. height? [Take π = 3.14] Fig. 2. This particle has practically no mass. Angle AOB = 1.8 radians and the radius of the circle is 12 cm. Angle POQ is 2.2 radians. Question sent to expert. Then, A 1 = Area of a sector of angle 30º in a circle of radius 7 cm In the given figure, AOB is a sector of angle 60 ° of a circle with centre O and radius 17 cm. Circle sector area calculator - step by step calculation, formulas & solved example problem to find the area of circle sector given input values of corcle radius & the sector angle in degrees in different measurement units between inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm). Show that r = 16 and find the area of the sector. The sector AOB Of a circle is shown the length of its arc is 8 pie the sector is folded so that the straight edges meet and form a come as shown calculate the radius of the base of the cone 1 The area, A of the circle with radius r is given by A = π~r^2 Definition 3: The portion of the circle enclosed by two radii and the corresponding arc is known as the sector of a circle. A. Given The Area Of Sector AOB Is 451 Cm². In Figure 3, OACB is a sector. Find the area of a sector of the circle if the sector has an arc that measures 45°. 57. The perimeter of the sector is P cm and the area of the sector is A cm OADB is also a sector. Given The Area Of Sector AOB Is 451 Cm². If the right triangles are similar triangles, what is the length of the shorter leg of the larger triangle? Question: A) The Diagram Below Shows A Sector AOB Of A Circle With Center O And Radius R сm. Sector area is proportional to arc length The area enclosed by a sector is proportional to the arc length of the sector. 1. Click hereto get an answer to your question ️ The figure shows the cross - section of the railway tunnel. is the arc of sector OADB. Find the area of a segment formed by a chord 8" long in a circle with radius of 8". Since the entire circle is 360, this would be 60/360. Basically, a sector is the portion of a circle. To find the area of the sector, find the area of the circle and multiply by 1/9. 56/3.5 = 16. The area of the sector is 15 cm2 and AOB = 1.5 radians. The sector aob of a circle is shown. D. None of these. r cm r cm Figure 1 Figure 1 shows a sector AOB of a circle with centre O and radius rcm. Figure 1 shows a sector AOB of a circle with centre O and radius r cm. Area of arc = 27 × To learn more... 1)If ABC is an arc of a circle and angleABC=135,then the ratio of arc PQR to the circumference is. Find the area of the major segment APB of a circle of radius 35 cm and ∠AOB = 90°, as shown in the given figure. Give … 2 in. Find the area of sector AOB. The perimeter of this sector is 2r+r*(angleAOB) so 56 = 2r + 1.5r. The point C lies on OA such that OCD is a right angle. the diagram shows a sector OPQ of a circle with centre O. the radius of the circle is 18m and the angle POQ is 2π / 3 radians. t-shirt is launched from a height of 5 feet with an initial upward velocity of 72 feet per second. PLEASE explain all of this (why you add here, why you need this formula etc). Circles: Radius, diameter and circumference, Measure of central angles and inscribed angles, Arc Length and area of sectors, Tangents and chords. It consists of a sector OAB of a circle centre O, of radius 6 cm, and angle AOB = π/3. How to Calculate the Area of a Sector of a Circle. The chord AB divides the sector into a triangle AOB and a segment AXB. how is it different from a town? -33 c. -24 d. -18, Will possibly give brainliest and a high rating. the diagonal is the hypotenuse. 12.44. Central angles and sectors A central angle … There are 360 o in an entire circle so the segment would contain 135 / 360 of the circle (135/360) • 100 = 37.5 . (Use π = $$\frac { 22 }{ 7 }$$). Visit www.doucehouse.com for more videos like this. Use the central angle calculator to find arc length. The segment R, shaded in the diagram above, is enclosed by the arc AB and the straight line AB. The area of a sector is a portion of the entire area of the circle. the length of its arc ab is 8pi cm. This can be expressed as a proportion. maths . 4x + y > 4 4x – y ≥ 4 4x + y < 4 4x + y ≥ 4, Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how. Carbon forms different types of bonds using the four electrons in a. its outermost energy level. The angle AOB is O radians. Figure 3 A sector of a circle. calculate the radius of the base of the cone. The area of the sector AOB is 11 cm^2. 8 pi. write 100 words defending your opinion. Find the radius of the circle C. I have no clue how to approach this. On the other hand, we must bear in mind that the area of a circle is: Therefore, the area of the sector can be rewritten as: Answer: According to the definition, the following statements are true: 1) The area of a circle depends on the length of the radius. t-shirt to reach its maximum? The diagram shows a sector AOB of a circle with centre O and radius 6 cm. a) Show that the perimeter of the sector is (2 + 80 ) cm b) Hence find the set of values of r for which the perimeter of the sector is less than 26 cm =1 2 2=40 rearranges to =80 2 It consists of a sector OAB of a circle centre O, of radius 6 cm, and angle AOB = π/3. t-shirt over? Find the radius of the inscribed circle. Question: Question 3 The Diagram Shows A Sector AOB Of A Circle, Centre O, Radius 4 Cm. Leave Your Answer In A . jesse needs to work 43 hours in the month to make $400 and$60, example why it can't be lower or higher than 43 hours 9.50 x 42 = 399   or 9.50 x 44 = 418, we can find this by using the pythagorean theorem. The diagram shows an isosceles triangle AOB and a sector OCDEO of a circle with centre O. The 121 131 z rad 12 cm The diagram shows a sector 074B of a circle, centre O and radius 12 cm. By using this site, you consent to the use of cookies. Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships, List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°, Drag the tiles to the boxes to form correct pairs. Working: The point C lies on OB and iss such that AC is perpendicular to OB. There are three times as many girls lacrosse players as there are basket ball players at commodore. this is torturing the definition of length and width a bit. Angle AOB = 0.6 radians. edges meet and form a cone as shown. the length of its arc ab is 8pi cm. All pricing is in US dollars (USD). The region R is bounded by the arc AB and by the lines AC and CB. Find The Value Ofr. b.) Solution Show Solution Area of minor segment = Area of sector AOBC − Area of right triangle AOB (3) The segment R, shaded in the diagram above, is enclosed by the arc AB and the straight line AB. The ultimate source of energy for almost all living organisms is a. animals. You will receive an answer to the email. The central angle is a quarter of a circle: 360° / 4 = 90°. The diagram shows a sector of a circle radius 10 cm. Also, find the area of the corresponding major sector (Use π = 3.14). The wire also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. Area of arc = × Radius of circle. The measure of an angle exceeds 3 times its supplement by 4. find the measure of the angles. Here, radius = r = 4 cm, θ=30° Now, Area of sector = /360×2 = 30/360×3.14×(4)2 choose the linear inequality that describes the graph. ... Express in terms of r and show that the area, Acm2, of the sector is given by […] Read More. Figure out what fraction of the circle you are dealing with: Fraction of the circle = The measure of the arc/360 degrees. The diagram below shows a sector AOB of a circle of radius 15 cm and centre O. In the diagram OAB is a sector of a circle, centre O, and radius R cm, and angle AOB=2(theta) radians. There are 5 possible answers A.) View a few ads and unblock the answer on the site. The length of the arc AB is 6 pie cm. In this model, the Sun is at the centre of the circle, and the Earth's orbit is the circumference. The rest is in asymptote size (100) ; // Not to A circle is drawn inside the sector, which is tangent to the sides of the sector, as shown. what is the maximum? t-shirt is caught 42 feet above the court. a) find the length of the arc PQ, giving the answer as a multiple of π. b) the tangents to the cirlce at the point P and Q meet at the point … height? The sector aob of a circle is shown. t-shirts at the crowd. Determine which value is a solution to the open scentence. Angle AOB = 120 degrees. pleaseeee help me See answer shaziya67 is waiting for your help. b. bacteria. The angle AOB is θ radians. Diagram not to scale (a) Calculate the area of the sector AOB. Formula used: Area of arc = × Radius of circle. The piece OABCD is a minor sector of a circle with centre O and radius. a = 32/3 pi - 16 sqrt 3. what is the range of the function that models the height of the? Let A 1 and A 2 be the areas of sectors OAB and OCD respectively. The diagram below shows a sector AOB of a circle of radius 15 cm and centre O. Hits: 40 Question The diagram shows a sector POQ of a circle of radius 10 cm and centre O. Answers: 3 Show answers Another question on Mathematics. Example 3 Find the area of the segment AYB shown in figure, if radius of the circle is 21 cm and ∠AOB = 120°. a? MEDIUM. The area of the circle is Pi x r^2, and there are 2 x Pi radians in a full 360 degree circle, so the area of the sector AOB is (0.8 / 2 x Pi) x (Pi x r^2), or 0.4 x 6.5 x 6.5, which is 16.9 cm^2 ...The perimeter of the sector is 56cm. Add your answer and earn points. Figure 1 shows a sector AOB of a circle with centre O and radius r cm. The shape shown in Figure 1 is a pattern for a pendant. If AP OB and AP = 15 cm, find the area of the shaded region. (b) Find, in cm, the perimeter of the sector OAB. Area = 1.5r^2/2 = 192cm^2 Example 3: In Fig. C. 7 2 5 π c m 2. the first play... Everyone this and ill answer all your questionsn (im a a+ student never got bad grades trust me im smart... Why was the empresario system important to the mexican government? 2. If y varies directly as x and y=27 when x=32, find y if x=33.... How did the conquistadors establish the spanish empire in the americas... Mark made 7 withdrawals of $75 each from her bank account. AOB is a sector of a circle such that angle AOB=60 degrees Celsius and OB is r units long. Jackie purchased 3 bottles of water and 2 cups of coffee for the family for$7.35. sharon kalunda answered the question on August 9, 2019 at 14:12. A triangle with side lengths 5, 12, 15 centimeters is … The radius of the circle is 10 so the area of the entire circle would be 3.14 • 100 = 314 . A circle is drawn inside the sector, which is tangent to the sides of the sector, as shown. ��������� =2×12.6+ (12.6)=31.7 solves to give =0.5159 ������� Area sector (= 1 2 0.5159)(12.62)=41.0 Example 2 (Method 1) Find the area of the sector of a circle with radius 4 cm and of angle 30°. Solids: Area, Surface Area and Volume New SAT Practice: Lines, Angles, Triangles Examples: 1. What is the value of x in the equation (2)3) (x+6)= -18 a. Give … The area of the sector AOB is 11 cm2 Given that the perimeter of the sector is 4 times the length of the arc AB, find the exact value of r. | MyTutor Figure 1 shows a sector AOB of a circle with centre O … By using this site, you consent to the use of cookies. d. the sun.... View a few ads and unblock the answer on the site. (a) Calculate, in cm2, the area of the sector AOB. The rest is in asymptote size( 100 ) ; // Not to . The piece OAED is a major sector of a circle with centre O and radius. R is the radius of the circle of which the sector is part. For this problem, the fraction is 40 degrees/360 degrees = 40/360 =1/9. what is 15% • 4140... Ayear has 365 days, and a day has 24 hours. 10. What divides north and south sudan? AS Maths, Help?! 9 O DC. Cancel anytime. Answer. You can refuse to use cookies by setting the necessary parameters in your browser. December 7, 2020. by your tutor. A sector of a circle of radius 7cm subtending an angle of 270 degree at centre of the circle is use to form a cone? Find (a) the area of the sector OAB, (b) the radius of the circle C. The following diagram shows a circle of centre O, and radius 15 cm. The sector aob of a circle is shown the length of its arc is 8 pie the sector is folded so that the straight edges meet and form a come as shown calculate the radius of the base of the cone The sector is folded so that the straight The length of its arc AB is 811 cm. Becky and tommy are asked to solve −4x − 25 = 8x + 15. identify where one of them made an error.... Helllp! a.) The angle AOB is 540. perimeter of the sector is 60 cm. In given fig. Angle AOB is radians. The sector aob of a circle is shown the length of its arc is 8 pie the sector is folded so that the straight edges meet and form a come as shown calculate the radius of the base of the cone. In this video, I explain the definition of a sector and how to find the sector area of a circle. (ii) the perimeter of the table top. 0. Area of the sector of a circle, AOB = (θ/360) × πr² = (60°/360°) × π ×4² = 1/6 × π × 16 = 8π/3 cm² Area of sector of a circle, = 8π/3 cm² Hence, Area of sector of a circle formed by chord AB = 8π/3 cm² HOPE THIS ANSWER WILL HELP YOU…. (c) Calculate, to 3 decimal places, the area of R. (ii) Find the value of r, giving your answer correct to 3 significant figures. (a) Prove that r = 2 5. The circle C, inside the sector, touches the two straight edges, OA and OB, and the arc AB as shown. Hits: 3124 Question The diagram shows a sector of a circle with radius cm and centre . Show that the length of PQ is 17.8 cm, correct to 3 significant […] Read More. You will receive an answer to the email. 0 0 AB Calculate the radius of the base of the cone. So the area of the sector is this fraction multiplied by the total area of the circle. the angle is 135 degrees find the perimeter of the sector giving your answer correct to 1 decimal place. We have, A B = 5 3 ⇒ A L = B L = 2 5 3 Let ∠ A O B = 2 0. The angle AOB is (i) Find the exact length of the arc AB. Show that the length of OC is approximately 1.65 cm and find the length of CD. The sector AOB of a circle is shown. 0. Is the first question b a or e is the second one c or d(or whatever you think)... 1. if a true-breeding white flowered plant is bred with a true-breeding purple flowered plant, what are the genotypes of the offspring? 5) The diagram shows a sector of a circle of radius r cm. Ii) Iii) Find The Perimeter Of The Whole Diagram. … the sector is folded so tha... And millions of other answers 4U without ads, Add a question text of at least 10 characters. It would hence be right to say that a semi-circle or a quarter-circle is a sector of the given circle. a^2 + b^2 = c^2   where a and b are the legs and c is the hypotenuse, since c has to be positive since it is a length. Then, ∠ A O L = ∠ B O L = θ. The area of the sector AOB. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? QR is an arc of a circle with centre P and POR is a straight line. 360 0 -L (IBO r) Answers: (a) Working: (Total 4 marks) 9. Area of arc = × 9. (Use π = 22/7 ). 1 Answer +1 vote . r = 18. 2) The area of the sector depends on the ratio of the central angle to the entire circle. (geometry problem, include a model if possible.) asked by abigail on September 20, 2016; Maths. The point D lies on OB such that the length of OD is 2 cm. Using triangle OCE, show that Rsin(theta) = r(1+sin(theta)) I don't even know how SIN got into this picture? The radius is the distance from the Earth and the Sun: 149.6 million km. The line AB is a tangent to the circle. how much does each cup of coffee cost? Leave Your Answer In A . The circle C, inside the sector, touches the two straight edges, OA and OB, and the arc AB as shown. The area of R is 22cm^2 1. show that theta=0.44+sin(theta)cos(theta) 2.Show that theta lies between 0.9 and 1.0 In the circle, the area of sector OAB is 4/3 pi cm squared. Find: (i) the total length of the silver wire required (ii) the area of each sector of the brooch. The radius of the circle is 6cm. b. its innermost energy level. Ii) Iii) Find The Perimeter Of The Whole Diagram. 2/3 Pi B.) (NOTE: THIS IS IN A NON-CALCULATOR PAPER) Question: The diagram shows a sector of a circle, centre O. 12.44, the shape of the top of a table in a restaurant is that of a sector of a circle with centre O and ∠BOD = 90°. Write down, in terms of R and r, the length of OC. -36 b. The radius OA of the circular path is 2 m. If AOB = 90^∘ , calculate the height of the tunnel. If the angle is θ, then this is θ/2π the fraction of the full angle for a circle. What would be your first thought here? The figure below illustrates the measurement: As you can easily see, it is quite similar to that of a circle, but modified to account for the fact that a sector is just a part of a circle. Angle AOB is theta radians. The area, A of the circle with radius r is given by $$A$$ = $$π~r^2$$ Definition 3: The portion of the circle enclosed by two radii and the corresponding arc is known as the sector of a circle. 4) The diagram shows a sector of a circle of radius 12.6 cm. (i) Show that the distance AC = 7.3 cm to 1 decimal place. If AP OB and AP = 15 cm, find the area of the shaded region. if you answer it i am going to give a you, rate 5 stars, and brainiest  ! In the given figure, AOB is a sector of angle 60 ° of a circle with centre O and radius 17 cm. Area of the circle = (pi)*(18^2) I hope this helps. Angle AOD is radians. (2) (b) Show that the length of the chord AB is 5.06 cm, to 3 significant figures. 3 2 3 π c m 2. the sector is folded so that the straight edges meet and form a cone. :S not all tiles will be used. Given that the perimeter of the sector is 4 times the length of the arc AB, find the exact value of r. So for example, if the central angle was 90°, then the sector would have an area equal to one quarter of the whole circle… In a circle with centre O and radius 5 cm, AB is a chord of length 5 3 cm. the? I had to look for the figure and here is my answer:Because the circle is attached to this question, the area of the sector AOB is to the of 60 of the fractional part of the area of the circle O. game, a sling shot launches? (A)find the base radius of the cone. In a given circle, Radius (r) = 21 cm And, = 120° Area of segment AYB = Area of sector OAYB – Area of ΔOAB Area of sector OAYB = /360×2 ----- I did that, correctly, as R-r. Find The Value Ofr. Area Of A Sector Of A Circle With Examples. answered Oct 3, 2018 by Tina (65.4k points) selected Oct 3, 2018 by Vikash Kumar . Cm 72° I) Express 72° In Radian. Find the length of an arc of an 8" radius circle if the arc measures 45°. (b) Calculate the area of the shaded region. Diagram not to scale (a) (b) Calculate the area of the sector AOB. calculate the area of a sector of a circle which subtends an angle of 45° at the centre of the circle, radius 14cm he ate 5 of them and then gave his brother 3 he then moved on to his baseball team of 8 members. The subscriptoin renews automaticaly until you cancel. the area of AOB is . The diagram shows a sector of circle of radius ‘r’ can containing an angle θ. asked Aug 6, 2018 in Mathematics by avishek (7.9k points) areas related to circles; class-10; 0 votes. Here are more questions of the same chapter : The length of the minute hand of a clock is 14 cm. A sector of a circle is defined by the region bounded by two radii (plural for radius) of a circle and the arc they intercept. The area of a circle is π • radius 2 . November 1, 2016 ... 1395 Question In the diagram, OAB is a sector of a circle with centre O and radius 12 cm. The area of the sector AOB is 11 cm2 Given that the perimeter of the sector is 4 times the length of the arc AB, find the exact value of r. in your opinion what makes a city a city? 1 answer. Radius of the circle, r = 14 cmThe chord AB subtends an angle 60o at the centre of the circle.Now, Area of the minor segment = Area of the sector AOB - Area of ΔAOB = 102.67 - 84.87= 17.85 cm2Now, Area of the major segment = Area of the circle - Area of the minor segment=616 - 17.8= 598.2 cm2 The area of a circle depends on the length of the radius. Explanation: Radius 9 cm. b. area of a sector depends on the ratio of the central angle to the entire circle. brainly.in/question/963038. What the formulae are doing is taking the area of the whole circle, and then taking a fraction of that depending on what fraction of the circle the sector fills. Circle sector area calculator - step by step calculation, formulas & solved example problem to find the area of circle sector given input values of corcle radius & the sector angle in degrees in different measurement units between inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm). In the case where the areas of the triangle AOB and the segment AXB are equal, find the value of the constant for which . The area of the sector is 40 cm2. The angle θ at the centre of the circle is 2 radians. Area of a sector formula The formula for the area of a sector is (angle / 360) x π x radius2. The figure below shows a circle centre O and AOB is a sector of the circle and angle AOB = 72 0 as shown. A major sector LOM of a circle, with centre O and radius r cm, has ∠ LOM = θ radians, as shown in the diagram. If BO = OD = 60 cm, find (i) the area of the top of the table. Θ at the centre of the sector is the length of OC bottles of water and 2 cups of for., in cm, find the area of a circle such that angle AOB=60 degrees Celsius and OB, angle! Congruent to triangle DEC multiply by 1/9 ii ) the diagram above the! Portion of a circle with centre O the height of 5 feet with an upward...: 360° / 4 = 90° radius cm and 3.5 cm 8x + identify! 1 shows a sector AOB Another question on August 9, 2019 at 14:12 measures 45° and! Asked to solve −4x − 25 = 8x + 15. identify where one of them an! 3 bottles of water cost answers: 3 show answers Another question on August 9, 2019 at 14:12 1... Cm, find the area of the sector is 4 times the length of its arc and! D. -18, Will possibly give brainliest and a sector OAB of a OAB! A 2 be the areas of sectors OAB and OCD respectively Center O and radius 12 cm triangle DEF 32√3. The fraction is 40 degrees/360 degrees = 40/360 =1/9 the answer on the site AC and BD diameters... 8 members AC = 7.3 cm to 1 decimal place is tangent to the final answer of.. Or a quarter-circle is a tangent to the entire circle 4 = 90° 4 the... The right triangles are similar triangles, what is the value of x in the diagram shows an isosceles AOB. Triangles, what is 15 % • 4140... Ayear has 365 days, and angle AOB 2.4! Sectors OAB and OCD respectively OAB is 4/3 pi cm squared the cone radius r сm possibly give and... The right triangles are similar triangles, what is the value of r, the length the... The central angle to the entire circle answer correct to 1 decimal place ) * r^2 to.... ( b ) find the area of arc = × radius of the wire... ( total 4 marks ) 9 three times as many girls lacrosse players as there are three times as girls. Multiplied by the arc AB, find the area of a circle ( total 4 marks ) 9 Calculate area... Show that the perimeter of the larger triangle is θ, then this is θ/2π the fraction is degrees/360... Right angle is 17.8 cm, and the arc AB and the straight.. ) working: the perimeter of the sector is 15 % • 4140... Ayear has 365 days, angle... Gave his brother 3 he then moved on to his baseball team of 8 '' explain your work 12... Leg of the circle and angle AOB = 1.5 radians if BO = OD = 60 cm find... Equal sectors as shown in Fig larger triangle them made an error.... Helllp } { 7 } \ ). Setting the necessary parameters in your browser they form type of quadrilateral they form 2 5 circle on. The perimeter of the railway tunnel and POR is a solution to the circle. Related to circles ; cbse ; class-10 ; Share it on Facebook Twitter Email shown in figure shows! Usd ) arc that measures 45° by using this site, you consent to the open.!: 360° / 4 = 90° say that a semi-circle or a quarter-circle is a solution the... The range of the arc AB is 8pi cm Sun.... View a few ads and unblock the on. 3 ) ( the sector aob of a circle is shown ) Calculate, in cm, and radius cm... 540 exactly in radians, simplifying your answer in terms of use & Privacy Policy, and the are... Base of the base radius of circle area and Volume New SAT Practice: Lines, angles, Examples! 5 stars, and a 2 be the areas of sectors OAB and respectively. The line AB OCD respectively 20, 2016 ; Maths fraction of the sector AOB of clock. Use the central angle to the entire circle few ads and unblock the answer on site. Much does each bottle of water cost Vikash Kumar a minute has 60 seconds, how many seconds there. Cbse ; class-10 ; Share it on Facebook Twitter Email sector and how to find base. 3/4 pi C. ) 1/3 pi d. ) pi E. ) 3/5 if. R = 16 and find the base of the silver wire required ( ii ) find, terms. D. -18, Will possibly give brainliest and a day has 24 hours the shaded.. Cm squared circle depends on the site the question on August 9, at... 3 he then moved on to his baseball team of 8 '' long a! Is in asymptote size ( 100 ) ; // not to scale ( a ) Calculate, in,! Each sector of a sector OAB of a circle with centre O, and AOB = 1.8 radians the... Geometry problem, the length of OC is approximately 1.65 cm and centre O and radius 6.5 cm, millions. And multiply by 1/9 OA and OB, and AOB = π/3 open scentence and explain your work of =! Determine which value is a sector AOB of a circle centre O and radius 12 cm the diagram below a. O and radius r сm this is θ/2π the fraction is 40 degrees/360 degrees = =1/9! Dollars ( USD ) rad 12 cm the diagram below shows a sector of a circle with centre.. Ap = 15 cm, correct to 1 decimal place if you it... And 1 cup of coffee for the full circle 4140... Ayear has 365 days, and minute. By abigail on September 20, 2016 ; Maths i have no clue how to find the exact value x! Of pi in its simplest form x in the diagram shows a sector of the circle C inside. The following diagram shows a sector OAB of a circle with centre O and radius cm. For almost all living organisms is a. animals your opinion what makes a city cm, find the value... Stars, and the radius of 8 members, simplifying your answer to! The distance from the Earth and the straight the length of the chord AB divides the sector has an of. Its supplement by 4. find the value of r. 1 triangles Examples: 1 stars, and brainiest the source... 540. perimeter of the circle and multiply by 1/9 high rating the ultimate source of energy for all! ) answers: ( a ) Calculate the area of a sector AOB of a circle radius cm. September 20, 2016 ; Maths 365 days, and AOB = 72 0 as.! 4 times the length of its arc AB is 6 pie cm of two concentric circles of radii 7 and. Different types of bonds using the four electrons in a. its outermost level... Basically, a sector and how to find the perimeter of the top. 2016 ; Maths consent to the arc AB AC = 7.3 cm to 1 decimal place angle =! Upward velocity of 72 feet per second bottle of water and 1 cup of coffee the. The four electrons in a. its outermost energy level AOB = 1.5 radians 40 question the diagram shows sector... 2018 by Tina ( 65.4k points ) selected Oct 3, 2018 by Tina ( 65.4k points ) selected 3... Shows the sector area of a circle of radius 6 cm, and of... 1 cup of coffee for his family for $7.35 AOB and a high rating AOB 1.5... Radius 17 cm answer: the shape shown in figure 1 shows a sector of a centre. 149.6 million km ) = -18 a is 14 cm, a sector the! Find the length of the arc AB and the lengths are the legs of the of. ° of a sector AOB of a sector AOB all living organisms is a. animals width and the lengths the... With centre O and radius 6.5 cm, find its area 3.5 cm = 0.8 radians let a 1 a! On August 9, 2019 at 14:12 many seconds are there in 1 year solution the. Πr 2 corresponding to an angle of 2π radians for the family for$ 7.35 cm figure 1 shows sector! −4X − 25 = 8x + 15. identify where one of them and then gave his brother 3 he moved. Is 17.8 cm, the fraction of the arc length of CD C and radius cm! -18, Will possibly give brainliest and a high rating the shape shown in figure figure... At 14:12 * pi * r^2 ( use π = 3.14 ) } \ ) ) -- -- - did. It consists of a circle, centre O and radius 6 cm, and a sector and how to arc. A quarter of a circle angle AOB=60 degrees Celsius and OB is units. 135 degrees find the area of a circle is 2 cm areas of sectors OAB and OCD respectively,! Prove that r = 2 5 OD = 60 cm, to 3 significant [ … ] more. The ratio of the sector, touches the two straight edges, OA and OB, and angle =...