Question

What os the radius of a circle having 132 cm as circumference

Answer 1

Circmference of circle = 2 × 22/7× radius
= > 2 × 22/7×radius= 132
=>44/7×radius=132
=>radius=132×7/44
=>Radius=3×7=21 cm.

Answer 2

let ,

circumference=2 pi r

=132

r is the radius

hence

132=2 pi r

132/2= pi r

66=pi r

r=66/pi

pi=22/7

r=66/22/7

r=66*7/22

r=3*7

r=21

thus radius be 21 cm

hope it help you!