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How many square meters of hard paper do you need to make a small cube carton with 20 edges and 15 cm in length
How many square meters of cardboard do you need to make 20 small cube cartons with 15 cm long edges?
15×15×6×20
=1350×20
=27000 square centimeters
How many square meters of cardboard do you need to make 20 small cube cartons with 30cm edge length
The surface area of a cube carton is 30 * 30 * 6 = 5400 (square centimeter) = 0.54 (square meter)
The hard paper area of 20 cube cartons is 0.54 * 20 = 10.8 (M2)
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