Farmer dave builds a create to hold vegetables. the volume of the create is 48 cubic feet. the base area of the create is 16 square feet. what is the height of the create?

16 sq ft = 2 ft x 8 ft 
                4 ft x 4 ft

but..
4 ft x 4 ft x 4 ft = 64 cubic ft

So 4 cannot be the height of this crate.

h represents the height of the crate (defined variable)
2 ft x 8 ft x h = 48 cubic ft
16h = 48
h = 3 ft

The height of the crate is 3 feet.

Check:
2 ft x 8 ft x 3 ft = 48 ft ³

Wow. that is a really cool question.