Question

Find the area of a circle whose circumference is 8π.

Answer 1

Given: Circumference C = 8π.

Step-wise calculation:

Use C = 2πr and A = πr².

1. `r = C/(2π)`

= `(8π)/(2π)`

= 4

2. A = πr²

= π × 4²

= 16π

Area = 16π (square units).