SOLUTION: find the area of a circle with circumference 10pi meters nearest t enth

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Question 439482: find the area of a circle with circumference 10pi meters nearest t
enth
Answer by vleith(2983) About Me  (Show Source):
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Circumference+=+2+%2A+pi+%2A+radius
10%2Api+=+2+%2A+pi+%2A+radius
5+=+radius
AreaOfCircle+=+pi+%2A+%28radius%29%5E2
AreaOfCircle+=+pi+%2A+5%5E2
AreaOfCircle+=+25%2Api
To the nearest tenth = 78.5 square meters