Math
posted by Pista .
The volume of a rectangular slab of concrete needs to exceed 72cu.ft. If the length is 12ft. and he width is 8ft. How thick does the concrete slab need to be?

Volume of a slab
=Width*length*height
Width=8'
Length=12'
We have then
Volume = 12*8*height >72
Solve for height
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