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How many square meters of cardboard do you need to make 20 small cube cartons with 130cm edge length
130cm = 1.3m
1.3×1.3×6×20
=10.14×20
=202.8 (M2)
The squadron committee pasted red paper on all sides of a 46cm long cube carton and used it as a "love box" to donate money to hope primary school. How many square centimeters of red paper do they need at least?
46 × 46 × 6, = 2116 × 6, = 12696 square centimeters. A: they need at least 12696 square centimeters of red paper
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