Question

What is the area of a circle with circumference = 10 meters?

Answer 1

We need to find radius of circle in order to compute area of circle.

We have given it`s length or:

length=10(m)=$2\times\pi\times R$, it is easy to find R from previous equation:

$R=\frac{10}{2\times\pi}$ then we can find area through $area=\pi\times R^2$, So:

$area=\pi\times R^2$=$\frac{\pi\times 10^2}{4\times \pi^2}=7.95 m^2$ , this is the area of given circle.