Answer:
100 cubic feet
Explanation:
To find the volume of a rectangular prism, we need to multiply the area of the base by the height.
Given:
Area of the top face = 20 ft²
Height = 5 ft
The volume (V) can be calculated as follows:
V = Area of the top face * Height
V = 20 ft² * 5 ft
V = 100 ft³
Therefore, the volume of the rectangular prism is 100 cubic feet.