Question

what is the area of a circle with a radius of 5.2 inches? Express the answer rounded to the nearest tenth.

Answer 1

The area of a circle is given by

$A=\pi r^2$

Where r is the radius of the circle and π is a constant.

For the given circle, the radius is 5.2 inches.

So, the area is

$\begin{gathered} A=\pi(5.2)^2 \\ A=\pi\cdot27.04 \\ A=84.9\; \; in^2 \end{gathered}$

Therefore, the area of the given circle is 84.9 inches squared.