Nina is going to ship a package using the box with the dimensions shown.   A triangular prism. The triangular base has a base of 8 inches and height of 3 inches. The prism has height of 6 inches. Nina plans to fill the shipping box halfway with foam packaging. How many cubic inches of foam packaging does she need?
30 in cubed
6 in cubed
60 in cubed
72 in cubed