Answer
7 inches
Work Step by Step
Substitute the given area and solve for r.
$A=\pi r^2$
Substitute the area for A.
$49\pi=\pi r^2$
Divide both sides by $\pi$.
$49\pi \div \pi=\pi r^2\div \pi$
Simplify.
$49=r^2$
Take the square root of each side.
$\sqrt{49}=\sqrt{r^2}$
Simplify.
$7=r$
