A right rectangular prism has an area of 20 square units and a height of 3 units. What is the volume?

The volume of a prism is equal to the area of the base multiplied by the height.

In this case, the area of the base is 20 square units and the height is 3 units.
Therefore, the volume is:
Volume = Area of base x Height
Volume = 20 x 3
Volume = 60 cubic units

So, the volume of the right rectangular prism is 60 cubic units.