Question

It the circumference of a circle is 132cm, fidn its radius​

Answer 1

Step-by-step explanation:

Given : circumference of a circle = 132cm

Find : radius (r)

solution :

circumference of a circle = 2* pi *r

132 = 2* 22/7 * r

132*7/2*22 = r

132 * 7 / 44 = r

12 *7 / 4 = r

3*7 = r

21 = r

radius = 21 cm

Answer 2

Circumference of circle = 2πr

132 = 2 × 22/7 × r

132/2 = 22/7 × r

66 = 22/7 × r

r = 66 × 7/22

r = 21 cm

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