Measurement question

Question

How many cubic feet of cement are in a rectangular cement slab that is 4 inches thick and measures 12.5 feet long and 9 feet wide

Answer 1

Do you know the formula for volume of a rectangular solid?  (If not, go find it in your textbook or class notes or even by Googling.)

 

Do you have the three dimensions needed? Yes you do, but one of is 4 inches; convert that to 1/3 ft.

 

Now you may substitute into the formula and obtain the volume in cubic feet.