If a driveway uses 40 cubic feet of concrete and the driveway measures 10ft by 8ft, how thick is the concrete?
To find the thickness of the concrete, we need to divide the volume of concrete used by the area of the driveway.
The volume of concrete used is 40 cubic feet.
The area of the driveway is length x width = 10 ft x 8 ft = 80 square feet.
Let's denote the thickness of the concrete as x.
So, we have the equation:
40 cubic feet / 80 square feet = x
Therefore, the thickness of the concrete is 0.5 feet or 6 inches.