A cuboid with 3cm side length and 8cm height on the bottom is chiseled out to make the largest cuboid. What is the volume of the chiseled out part

A cuboid with 3cm side length and 8cm height on the bottom is chiseled out to make the largest cuboid. What is the volume of the chiseled out part

The volume of the cube is 3 * 3 * 3 = 27 cubic centimeters, and the volume of the original cuboid is 3 * 3 * 8 = 72 cubic centimeters,
The volume of the chiseled part is 72-27 = 45 cubic centimeter