Brady bought the fish tank above for his new pet goldfish. (5 ft, 1.5 ft, 3 ft) He wants to know the volume of the tank to see how much water it will take to fill it completely. What is the volume of the fish tank?

The volume of the fish tank can be calculated using the formula for the volume of a rectangular prism, which is length x width x height.

Given:
Length = 5 ft
Width = 1.5 ft
Height = 3 ft

Volume = 5 ft x 1.5 ft x 3 ft = 22.5 cubic feet

Therefore, the volume of the fish tank is 22.5 cubic feet.