Question

The area of circle Z is 64 π ft. What is the value of r? r = 4 ft

r = 8 ft
r = 16 ft
r = 32 ft

Answer 1

8 ft

Explanation:

Area of a circle is given by πr² where r is the radius

Here we are given the area A and asked to find the radius

We have Area :
πr² = 64π

Dividing by π on both sides we get
r² = 64

r = ±√64

r = ±8

We can ignore negative values for radius and state that

r = 8 ft