SOLUTION: Timber (wood size 20' length x 3' perimeter). what is the cubic feet of this timber?

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Question 935715: Timber (wood size 20' length x 3' perimeter). what is the cubic feet of this timber?
Answer by Alan3354(69443) About Me  (Show Source):
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Timber (wood size 20' length x 3' perimeter). what is the cubic feet of this timber?
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Find the radius.
C = 2pi*r = 3
r = 3/(2pi)
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Vol+=+pi%2Ar%5E3%2Ah