Posted by Pista on Tuesday, March 15, 2011 at 10:04am.
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?

Math  MathMate, Tuesday, March 15, 2011 at 10:22am
Volume of a slab
=Width*length*height
Width=8'
Length=12'
We have then
Volume = 12*8*height >72
Solve for height