The volume of the smaller cube: Volume of a cube = Length³ Volume of a cube = 1³ = 1 ft.³ The volume of the larger cuboid: Volume of a cuboid = Length × Width × Height Volume of a cuboid = 13 × 7 × 8 = 728 ft.³
The volume of the composed figure: 728 ft³ + 1 ft.³ = 729 ft³