What is the area of the top surface of a circular manhole cover that has a radius of 30cm

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asked Jan 10, 2018 198k views

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What is the area of the top surface of a circular manhole cover that has a radius of 30cm

Mathematics
middle-school

Driangle asked

by Driangle

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1 Answer

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900pi or 2826 (if multiplying by 3.14)
A = r^2*pi

Dafang Cao answered Jan 14, 2018

by Dafang Cao

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