Question

5. What is the area of a circle with diameter 20 cm? Round your answer to the nearest tenth.

Answer 1

Answer: 314 cm squared

Explanation:

20 divided by 2 = 10

10 x 10 = 100

100 x 3.14 = 314

Answer 2

Area of a circle = πr²

Radius = 1/2 d = 1/2(20) = 10

A = π • 10²
= π • 100
= 314.2cm