Homework Help: Math

Posted by Simon on Wednesday, February 6, 2013 at 4:20am.

The cross section of a pipe of length 49cm.the thicknes of the pipe is 1cm4mm and the outer diameter is 30cm.find the volume of the pipe.

Math - Reiny, Wednesday, February 6, 2013 at 11:11am
area of cross-section of pipe
= π(30)^2 - π(1.4)^2

volume = 49(900π - 1.96π)
= 44003.96 cm^3
or appr 44000 cm^3
Math - Simon, Sunday, February 17, 2013 at 11:34am
Bt its ans 6166.16cm^3

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