Question

Find the circumference of the circle having radius - 4.2cm ,9.8m,21cm

Answer 1

Answer:

Circumference of circle = 2 pi r

1 ). 2*3.14 *4.2 = 26.62 cm

2 ). 2* 3.14 * 9.8 = 62.13 cm

3 ). 2* 3.14 *21 = 131.88 cm