Question

the radius of a circular pond is 21 cm.if a man walks around 20 times ,find the distance coveres by him.

Answer 1

Explanation:

The DIAMETER, d, of the pond is 2 x radius = 42 cm ( a very small pond)

the circumference is pi * d = 42 pi cm

TWENTY of these is 20 * 42 pi = 2639 cm ( or 26.39 m)