A cuboid wood block, cut 5cm from the left, becomes a cube, the surface area reduces 120 square cm, calculate the volume of the original cuboid

A cuboid wood block, cut 5cm from the left, becomes a cube, the surface area reduces 120 square cm, calculate the volume of the original cuboid

The width of the cuboid = height = 120 △ 5 △ 4 = 6cm
Length = 6 + 5 = 11cm
The volume of the original cuboid is 6 × 6 × 11 = 396 cubic centimeters