If the height of a cuboid is increased by 3 cm, it will become a cube. The surface area is increased by 84 square cm. How many cubic centimeters is the volume of the original factory building?

If the height of a cuboid is increased by 3 cm, it will become a cube. The surface area is increased by 84 square cm. How many cubic centimeters is the volume of the original factory building?


Let the length of the bottom side of the original cuboid be X,
3x * 4 = 84, x = 7 because it is a cube after heightening, the original height is 4cm,
So the volume of the original cuboid is 7 * 7 * 4 = 196 cubic centimeters