Question

If the perimeter and the area of a circle are numerically equal, then find the radius of the circle.

Answer 1

We have,

$Perimeter$ $=Areaofcircle$

We know that,

$Peremeter$ $=2\pi r$

$Area$ $=\pi r^2$

Therefore,

$2\pi r=\pi r^2$

$r=2$

Radius $=2units$

Hence, this is the radius of the circle.