Question

The circumference of a circle is 26 pi what is the area in square inches of the circle

Answer 1

circumference=

$2\pi \: radius$

$26\pi = 2\pi \: raduis \:$

$\frac{26\pi}{2\pi} = raduis$

radius = 13

area of circle =

$\pi {raduis}^{2}$

area of circle=

$\pi {13}^{2}$

area of circle=

$169\pi$