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Find the circumference of a circle if the area is 400 Pi meters?
Wiki User
∙ 13y ago
First we have to find the radius:
pi*radius2 = 400*pi square meters
Divide both sides by pi and then square root both sides:
radius = 20 meters
2*pi*radius or pi*diameter = circumference
2*pi*20 = 40*pi meters
Wiki User
∙ 13y ago
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