Question

Find the radius of that circle whose area is $616c{m}^2$.

Answer 1

Let ${}^{\prime }{r}^{\prime }$ be the radius of the given circle.

Given, Area of the circle $=616$ cm${}^2$.

We know, area of a circle $=\pi r^2$.

$\Rightarrow \pi r^2=616$

$\Rightarrow \frac{22}{7}\times r^2=616$

$\Rightarrow r^2=616\times \frac{7}{22}$

$\Rightarrow r^2=196$

$\Rightarrow r=\sqrt{196}=14cm$