Approximate to the nearest tenth when necessary.
-The area of a circle is $169 \pi$ square inches. Find the radius of the circle.
A) 23 in.
B) $169 \mathrm{in.}$
C) 13 in.
D) $40.8 \mathrm{in}$.

Question

Quizplus · Accepted Answer

The area of a circle is given by $A = \pi r^2$. Given $A = 169\pi$, we solve for $r$ by dividing both sides by $\pi$ and taking the square root: $r = \sqrt{169} = 13$ inches.

Approximate to the Nearest Tenth When Necessary 169π169 \pi169π Square Inches 169in.169 \mathrm{in.}169in.

Approximate to the Nearest Tenth When Necessary $169 \pi$ Square Inches $169 \mathrm{in.}$