Question

find the radius of the following circle whose circumference are 25.12

Answer 1

Circumference of the circle = 25.12

⇒ 2πr = 25.12

⇒ 2*22/7*r = 25.12

⇒ 44/7*r = 25.12

⇒ r = 25.12*7/44

⇒ r = 3.99 = 4 (approximately)

Answer 2

Answer:

circumference= 2* 22/7* r

25.12 = 2*22/7*r

r = 25.12 /2  *  7/22

r =3.99 = 4