Question

If the area of the circle is $9\pi m^2$ then its circumference is

Answer 1

Given,

Area of the circle $=9\pi m^2$

So,

$\pi r^2=9\pi$

$r=3$

We know that the circumference

$=2\pi r$

$=2\times 3.14\times 3$

$=18.84m$

Hence, this is the answer.