Answer: 8,000 in³
Step-by-step explanation:
The formula for the volume of a cube (a special type of box where all sides have the same length) is V = s^3, where s is the length of one side.
In this case, the length of one side of the cube is given as 20 inches.
Therefore, the volume of the cube is V = 20^3 cubic inches = 8,000 cubic inches.