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If the height of a cuboid is increased by 2 cm, it becomes a cube. At this time, the surface area is increased by 56 square cm. How much is the volume? Find out the reason··
56 ÷ 4 = 14 square centimeters, increasing the area of four small rectangles, each of which is 14 square centimeters
Then: the length = width of the bottom edge is: 14 △ 2 = 7 cm
Height: 7-2 = 5cm
Volume: 7 × 7 × 5 = 245 CC
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