are solved by group of students and teacher of Class 7, which is also the largest student community of Class 7. 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. Task 2: Find the area of a circle given its diameter is 12 cm. Calculate the area (in sq.cm) of a circle whose diameter is â¦ This discussion on Find the diameter of a circle whose circumference is 88 cm. Best answer. Task 1: Given the radius of a cricle, find its area. 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. If you donât know the radius, however, you can still calculate the area if you are given the length of the circleâs circumference, or perimeter. Also, explore the surface area or volume calculators, as well as hundreds of other math, finance, fitness, and health calculators. answered Dec 1 by Chitranjan (27.1k points) selected 3 days ago by Maira01 . So we know that the area, which is 36pi, is equal to pi r squared. Friends.. ! The missing length is the circumference. measurement; class-7; Share It On Facebook Twitter Email. 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. 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. 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. asked Jun 13, 2019 in Class VII Maths by muskan15 ( -3,443 points) Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. Answer. Using the knowledge that the diameter is 4.3m on the diagram and knowing that C = Ïd, we can calculate the circumference. 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. Find its radius (in cm). Find the area of the circle whose circumference is 88 cm. 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)} . Where: Ï is approximately equal to 3.14. Area of a circle diameter. is done on EduRev Study Group by Class 7 Students. And so if you look at it on both sides of this equation, if we divide-- let me rewrite it â¦ Hence, A 3 = A 1 + A 2 â Ï r 2 = Ï (20) 2 â¦ The diameter of a circle calculator uses the following equation: Area of a circle = Ï * (d/2) 2. 1 Answer +1 vote . Example: find the area of a circle. Find its radius (in cm). 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.. The Questions and Answers of Find the diameter of a circle whose circumference is 88 cm. We know that Circumference of circle is 2Ïr Circumference = 2Ïr = 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. 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. 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