Question

Taking $\pi =3.14$, find the circumference of a circle whose radius is
$20cm$

Answer 1

As we know that,

Circumference of a circle $=2\pi r$

Whereas, $r$ is the radius of circle.

Given:-

Radius of circle $=20cm$

Therefore,

Circumference of circle $=2\times 3.14\times 20=125.6cm$