This discussion on Find the diameter of a circle whose circumference is 88 cm. So we know that the area, which is 36pi, is equal to pi r squared. are solved by group of students and teacher of Class 7, which is also the largest student community of Class 7. 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. Area of a circle diameter. Answer. Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. Apply the second equation to get Ï x (12 / 2) 2 = 3.14159 x 36 = 113.1 cm 2 (square centimeters). 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. 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. asked Jun 13, 2019 in Class VII Maths by muskan15 ( -3,443 points) 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. answered Dec 1 by Chitranjan (27.1k points) selected 3 days ago by Maira01 . 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. 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. Also, explore the surface area or volume calculators, as well as hundreds of other math, finance, fitness, and health calculators. 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.. Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. Example: find the area of a circle. 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. Find the area of the circle whose circumference is 88 cm. Calculate the area (in sq.cm) of a circle whose diameter is ⦠Task 2: Find the area of a circle given its diameter is 12 cm. Hence, A 3 = A 1 + A 2 â Ï r 2 = Ï (20) 2 ⦠Task 1: Given the radius of a cricle, find its area. Area of a circle = Ï * r 2. 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. The diameter of a circle calculator uses the following equation: Area of a circle = Ï * (d/2) 2. is done on EduRev Study Group by Class 7 Students. With a little thinking we can easily figure out that, C = Ï x 4.3m = 13.51m (to 2 decimal places). 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. Where: Ï is approximately equal to 3.14. Friends.. ! Best answer. The Questions and Answers of Find the diameter of a circle whose circumference is 88 cm. Find its radius (in cm). 1 Answer +1 vote . Using the knowledge that the diameter is 4.3m on the diagram and knowing that C = Ïd, we can calculate the circumference. Find its radius (in cm). And so if you look at it on both sides of this equation, if we divide-- let me rewrite it ⦠The missing length is the circumference. 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