# How do you find the area of a circle with radius 4in?

Jun 1, 2018

$50.24$ in; $16 \pi$ in

#### Explanation:

The area of a circle is given by

$\pi {r}^{2}$

Where $r$ is the radius and $\pi \approx 3.14$, the ratio of a circle's circumference to its diameter.

Plugging in $4$ from the radius, we get

${4}^{2} \pi$

$\implies 16 \pi$ inches

This is our exact answer. Alternatively, we can plug in $3.14$ for $\pi$ to get

$50.24$ inches

Hope this helps!