Find the area of a circle whose circumference is 8π.
Given:
Circumference of circle = 8π
∵ Circumference of a circle = 2πr
∴ 8π = 2πr
r = 4
∵ Area of circle = πr2
∴ Area of circle = π × 4 × 4
= 16π
Hence, the area of the circle is 16π.