SOLUTION: a pipe of thicknes 1cm has an external diameter of 10cm.find the volume of 20m of pipe.

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Question 601831: a pipe of thicknes 1cm has an external diameter of 10cm.find the volume of 20m of pipe.
Answer by Alan3354(69443) About Me  (Show Source):
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a pipe of thicknes 1cm has an external diameter of 10cm.find the volume of 20m of pipe.
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The ID (inside diameter) is 10 - 2 = 8 cm
r = 4 cm
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Vol+=+pi%2Ar%5E2%2Ah