Question

To prove area circle is equal to pir ²
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Answer 1

Answer:

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As we know, the area of circle is equal to pi times square of its radius, i.e. π x r2. To find the area of circle we have to know the radius or diameter of the circle. For example, if the radius of circle is 7cm, then its area will be: Area of circle with 7 cm radius = πr2 = π(7)2 = 22/7 x 7 x 7 = 22 x 7 = 154 sq.cm.

Step-by-step explanation:

The area and circumference of a circle can be calculated using the following formulas. Circumference = 2πr ; Area = πr2. The circumference of the circle can be taken as π times the diameter of the circle. And the area of the circle is π times the square of the radius of the circle