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| Math Central | Quandaries & Queries |
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Question from mick: i am trying to find the area of concrete to be placed around a concrete pipe! Dimensions can be 12m wide by 5m wide by 7m deep and pipe been 8m by 600mm radius... |
Hi Mick. The way to solve this is to subtract the volume of the pipe from the volume of the total space.
The space is 12m x 5m x 7m which makes 420 m3.
The pipe volume is π (0.6 m)2 x 8m = 9.05 m3.
So the space surrounding the pipe is 420 - 9 = 411 cubic meters. That's a whole lot of concrete around it! Are you sure you have the measurements correct?
Cheers,
Stephen La Rocque.
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