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

asked Aug 5, 2021 149k views

2 votes

by MRA

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5 votes

Answer: 314 cm squared

Explanation:

20 divided by 2 = 10

10 x 10 = 100

100 x 3.14 = 314

Lanier answered Aug 5, 2021

3.8k points

3 votes

Area of a circle = πr²

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

A = π • 10²
= π • 100
= 314.2cm

Lomine answered Aug 9, 2021

4.7k points

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