Question

If the radius of a circle is $3cm$, find its circumference.

Answer 1

$\Rightarrow$Given the radius of the circle $r=3cm$

$\Rightarrow$circumference of the circle

$=2\pi r$
$=2\times 3.14\times 3=6\times 3.14cm=18.84cm$ [$\because \pi =3.14$]