Question

The diameter of a circle is 8 kilometers.

What is the circle's area?


PLEASE HELP

Answer 1

50.24

Explanation :
A= Pi x R^2
Radius is half of diameter
Half of 8= 4
4x4=16
3.14 x 16= 50.24

Answer 2

`area = \pi {r}^(2) \\ = (22)/(7) * {( (8)/(2) )}^(2) \\ = 50.3 \: {km}^(2)`