Find the volume of a rectangular prism (a box) that is

20
20 feet long,
6
6 feet wide and has a height of
4
4 feet.

The volume of a rectangular prism is calculated by multiplying the length, width, and height.

Volume = length x width x height
Volume = 20 ft x 6 ft x 4 ft
Volume = 480 cubic feet

Therefore, the volume of the rectangular prism is 480 cubic feet.