Question

A circle has an area of 49 pi in2. What is the circumference in the circle terms of pi?

Answer 1

14π in.

Explanation:

First, we use the area to find the radius.

A = πr²

πr² = 49π in.²

r² = 49 in.²

r = √(49 in.²)

r = 7 in.

Now, we use the radius to fins the circumference.

C = 2πr

C = 2 × π × 7 in.

C = 14π in.