Find the volume of the lunch box shown. The container consists of a rectangular prism and a triangular prism.
The volume of the rectangular prism is 5*10*7 = 350 cubic inches.
The triangular face of the triangular prism is (5*7)/2 = 17.5 square inches.
Therefore the volume of the triangular prism is 17.5*10 = 175 cubic inches.
Thus, the total volume is 350+175 = 525 cubic inches.