Start with finding the volume of each individual cube that is held inside of the prism. The formula for volume is length x width x height. This means you have to multiply 1/5 x 1/5 x 1/5. 1/5 x 1/5 x 1/5 = 0.008. Now take that volume of each individual cube and multiply it by 1,750 since the prism can hold 1,750 cubes. 1,750 x 0.008 = 14.
Your answer should be: 14 ft.^3