What is the area of a circle with a diameter that is 20 inches long? Round your answer to the nearest tenth. 125.7 in2 314.2 in2 400 in2 1,256.6 in2
The area of a circle with a diameter that is 20 inches long is circle area = 3.1416*(20/2)^2 = 314.16 = 314.2 square inches.
Question
Updated 56 days ago|12/27/2018 6:51:39 PM
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The area of a circle with a diameter that is 20 inches long is circle area = 3.1416*(20/2)^2 = 314.16 = 314.2 square inches.
Confirmed by jeifunk [3/17/2015 9:00:49 AM]
0
The area of a circle with a diameter that is 20 inches long is: "314.2 in2"

Developing

r = diameter / 2
r = 10

A = pi * r^2
A = 3.1416 * 100
A = 314,2 (rounded)

Added 56 days ago|12/27/2018 6:51:39 PM

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