Find the area of the circle whose circumference is 88 cm. Where: π is approximately equal to 3.14. Using the knowledge that the diameter is 4.3m on the diagram and knowing that C = πd, we can calculate the circumference. Best answer. 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. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. asked Jun 13, 2019 in Class VII Maths by muskan15 ( -3,443 points) We know that Circumference of circle is 2πr Circumference = 2πr = 22 cm r = 22/2π r = 11/π r = 11 ÷ 22/7 r = 11 × 7/22 r = 7/2 cm r = 3.5 cm Radius of circle is 3.5 cm. answered Dec 1 by Chitranjan (27.1k points) selected 3 days ago by Maira01 . Task 1: Given the radius of a cricle, find its area. Hence, A 3 = A 1 + A 2 ⇒ π r 2 = π (20) 2 … Friends.. ! So we know that the area, which is 36pi, is equal to pi r squared. 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. You can use a two-step process, solving first for the radius using the formula for the circumference: circumference = 2 π ( r ) {\displaystyle {\text{circumference}}=2\pi (r)} . Task 2: Find the area of a circle given its diameter is 12 cm. Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. 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. Apply the second equation to get π x (12 / 2) 2 = 3.14159 x 36 = 113.1 cm 2 (square centimeters). With a little thinking we can easily figure out that, C = π x 4.3m = 13.51m (to 2 decimal places). measurement; class-7; Share It On Facebook Twitter Email. 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. Also, explore the surface area or volume calculators, as well as hundreds of other math, finance, fitness, and health calculators. Calculate the area (in sq.cm) of a circle whose diameter is … And so if you look at it on both sides of this equation, if we divide-- let me rewrite it … Find its radius (in cm). The missing length is the circumference. are solved by group of students and teacher of Class 7, which is also the largest student community of Class 7. The Questions and Answers of Find the diameter of a circle whose circumference is 88 cm. If you don’t know the radius, however, you can still calculate the area if you are given the length of the circle’s circumference, or perimeter. 1 Answer +1 vote . Area of a circle = π * r 2. Area Questions & Answers for Bank Exams : The circumference of a circle is 88 cm. 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. For example, if the radius is 5 inches, then using the first area formula calculate π x 5 2 = 3.14159 x 25 = 78.54 sq in.. is done on EduRev Study Group by Class 7 Students. This discussion on Find the diameter of a circle whose circumference 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. Example: find the area of a circle. Area of a circle diameter. Answer. Find its area Given its diameter is … area of a circle whose circumference 88. 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