keke6361
09.08.2021 •
Mathematics
A square piece of cardboard of sides 15 cm is folded to make a cube of sides 5 cm. Is there enough cardboard?
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Ответ:
Step-by-step explanation:
The 15 cm by 15 cm piece of cardboard area = 225 cm².
A cube has six congruent faces. If each edge is 5 cm, the surface area is 6×5² = 150 cm². So there is enough cardboard to make a cube, but not by folding. You'd have to do some cutting and taping.
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