# The radius of a circle is 2 inches. What is the circle's area?

Jan 28, 2017

$4 \pi$ square inches

or approximately $12.56$ square inches

#### Explanation:

The formula for the area of a circle is
$A = \pi {r}^{2}$

in this case $r = 2 {\text{in" => r^2=4"in}}^{2}$

Then the area of the circle $A$ is

$A = 4 \pi {\text{in"^2approx12.56"in}}^{2}$