Find the area of the circle whose circumference is 88 cm. Find the diameter of a circle whose circumference is equal to the sum of circumference of circles with radii 10 cm, 12 cm and 18 cm. Friends.. ! With a little thinking we can easily figure out that, C = Ï x 4.3m = 13.51m (to 2 decimal places). The Questions and Answers of Find the diameter of a circle whose circumference is 88 cm. are solved by group of students and teacher of Class 7, which is also the largest student community of Class 7. Calculate the area (in sq.cm) of a circle whose diameter is ⦠Well, from the area, we could figure out what the radius is, and then from that radius, we can figure out what its circumference is. Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case. Best answer. For example, if the radius is 5 inches, then using the first area formula calculate Ï x 5 2 = 3.14159 x 25 = 78.54 sq in.. Where: Ï is approximately equal to 3.14. You can use a two-step process, solving first for the radius using the formula for the circumference: circumference = 2 Ï ( r ) {\displaystyle {\text{circumference}}=2\pi (r)} . measurement; class-7; Share It On Facebook Twitter Email. Hence, A 3 = A 1 + A 2 â Ï r 2 = Ï (20) 2 ⦠And so if you look at it on both sides of this equation, if we divide-- let me rewrite it ⦠If you donât know the radius, however, you can still calculate the area if you are given the length of the circleâs circumference, or perimeter. Task 2: Find the area of a circle given its diameter is 12 cm. Also, explore the surface area or volume calculators, as well as hundreds of other math, finance, fitness, and health calculators. Find the area of a circle whose circumference is 8 pi m 2 See answers apologiabiology apologiabiology Area=pir^2 circumference=2pir given c=8pi c=2pir 2pir=8pi divide both sides by 2pi r=4 area=pir^2 are=pi4^2 area=16pi area=16pi square meters. This discussion on Find the diameter of a circle whose circumference is 88 cm. We know that Circumference of circle is 2Ïr Circumference = 2Ïr = 22 cm r = 22/2Ï r = 11/Ï r = 11 ÷ 22/7 r = 11 × 7/22 r = 7/2 cm r = 3.5 cm Radius of circle is 3.5 cm. Example: find the area of a circle. Using the knowledge that the diameter is 4.3m on the diagram and knowing that C = Ïd, we can calculate the circumference. Task 1: Given the radius of a cricle, find its area. Find its radius (in cm). Apply the second equation to get Ï x (12 / 2) 2 = 3.14159 x 36 = 113.1 cm 2 (square centimeters). Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. Answer. asked Jun 13, 2019 in Class VII Maths by muskan15 ( -3,443 points) The missing length is the circumference. answered Dec 1 by Chitranjan (27.1k points) selected 3 days ago by Maira01 . Find its radius (in cm). This free area calculator determines the area of a number of common shapes using both metric units and US customary units of length, including rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram. Let A 1 = the area of the circle whose radius is 20 m [given] A 2 = the area of the circle whose radius is 48 m [given] Now we have to find the radius of third circle such that whose area is equal to the sum of areas of two fields. Area of a circle diameter. Area of a circle = Ï * r 2. is done on EduRev Study Group by Class 7 Students. The diameter of a circle calculator uses the following equation: Area of a circle = Ï * (d/2) 2. 1 Answer +1 vote . 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