Given a circle with an area of 25 pi in^2 What is the exact circumference?

asked Sep 12, 2021 108k views

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Given a circle with an area of 25 pi in^2
What is the exact circumference?

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Answer:

31.4

Explanation:

C = 2πr OR C = πd

But, we need to find r first.

$A = \pi r^2\\25\pi = \pi r^2\\√(25) = √(r^2) \\r=5\\\\C=2\pi r\\C=2\pi (5)\\C= 10\pi \\C= 31.4$

Ersin answered Sep 17, 2021

by Ersin

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