The volume of a cuboid is 640 cubic centimeters. If you cut off its height by 2 centimeters, you will become a cube. If the surface area of the cube is 384 square centimeters, then the surface area of the original cuboid is 384 square centimeters______ ．

Because 8 × 8 = 64, the length and width of the cuboid are 8 cm, 640 △ 64 = 10 cm, (8 × 8 + 8 × 10 + 10 × 8) × 2, = (64 + 80 + 80) × 2, = 448 cm; answer: the original surface area of the cuboid is 448 cm, so the answer is 448 cm

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