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If the height of a cuboid is increased by 3 cm, it will become a cube. At this time, the surface area will increase by 120 square percent emergency A cuboid, if its height is increased by 3 cm, becomes a cube. At this time, the surface area increased by 120 square centimeters. So what's the volume of the original cuboid?
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The increase into a cube indicates that the bottom is square, and the area of the four sides after increase is the same, so if 120 / 4 = 30mm2 and 30 / 3 = 10mm, the side length of the bottom is 10mm and the height is 7mm
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