Question

What is the area of a circle whose circumference is 8π ? a. 4π b. 8π c. 12π d. 16π

Answer 1

Explanation:

Before we find the area, we have to use the circumference to find the radius.

C = 2π r so

8π = 2π r

Divide both sides by 2π to get that r = 4. Now we can use that in the area formula for the circle:

A = πr²

A = π(4)²

A = 16π