Question

What is the area of a circle with diameter 8cm? Round your answer to the nearest tenth. use pi= 3.14

Answer 1

50.62=51

Explanation:

A=pi*r^2

=3.14*(4^2)

=50.62=51

Answer 2

50.2 square cm

Explanation:

Diameter = 8 cm

Radius = 8/2 = 4 cm

`area \: of \: circle = \pi {r}^(2) \\ = 3.14 * {4}^(2) \\ = 3.14 * 16 \\ = 50.24 \: {cm}^(2) \\ = 50.2 \: {cm}^(2)`