Question

find the radius of a circle. if its area is 616 CM 2

Answer 1

616=22/7×r×r
r=√616×7÷22
r=14

Answer 2

As per the data given in the above question.

In the above question, it is given that,

The given data is an area of a circle that is $616cm^{2}$

We have to find the radius of a circle.

Thus, the area of a circle is as below,

$\begin{array}{l}a=\pi \times r^{2} \\r^{2}=\frac{a}{\pi} \\r=\sqrt{\frac{a}{\pi}} \\r=\sqrt{\frac{616}{22}} \\r=14.0028=14 \mathrm{~cm}\end{array}$

Hence the radius of a circle is 14cm.