Question

if the circumference of circular sheet is 132cm.
Find its radius and area .
​

Answer 1

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>>If the perimeter of a circle is 132 cm,

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If the perimeter of a circle is 132 cm, find its area.

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Solution

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Correct option is B)

Let the radius of the circle is r cm

Perimeter of a circle =2πr=132

⇒2×

7

22

×r=132

⇒r=

22×2

132×7

⇒r=21 cm

Area of the circle =πr

2

⇒=

7

22

×21×21

⇒=1386 cm

2