To make a rectangular frame of 8cm long, 6cm wide and 5cm high, at least () cm iron wire should be used. If the frame is wrapped with colored paper, at least () cm iron wire should be used How many square centimeters of colored paper?

Required length = (8 + 5 + 6) × 4 = 76cm
Area of colored paper = (5 × 6 + 6 × 8 + 5 × 8) × 2 = 236 square centimeter

According to the next small cuboid with a volume of 200cm, the remaining part of a cuboid is a cube with an edge length of 5cm

According to the meaning of the title, its width and height are 5cm
The length of the cut part is 200 / (5 * 5) = 8cm
The length of the original cuboid is 8 + 5 = 13cm
Then v = 13 * 5 * 5 = 523 cm3
S = 2 * (13 * 5 + 5 * 5 + 13 * 5) = 310 square centimeters

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