Question

The circumference of a circle is equal to $72$ $\pi$. Find the radius of this circle.

Answer 1

Given, Circumference of a circle $=72\pi$

We know that Circumference $=\pi$ $d$

$d\pi =72\pi$
$d=72$

Since radius $=$ $\frac{d}{2}$
$\therefore$ radius $=\frac{72}{2}=36$