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1.75亿学生的选择
一道小学五年级数学题有一种长方体的糖果盒,长20厘米、宽15厘米、高5厘米.如果用长方形包装纸将这样两个糖果盒包装成一个礼品包,包装时包装纸不进行裁剪,在这种情况下为了节省包装纸,长方形包装纸的长、宽个是多少厘米?
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为节省包装纸 应该是把一个放在另一个上那么 包装纸长至少为20+5*2=30cm 宽至少为15+2*5=25cm
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其他类似问题
两个糖果盒
故长20厘米、宽15厘米、高10厘米长方形：25*50=1250
长40厘米，宽15厘米，高5厘米，这样你应该知道怎样包装了吧。它的表面积=（40×5+5×5+40×5）×2=850
只有两个糖果盒 落在一起 表面积才最小故长20厘米、宽15厘米、高10厘米所以长方形包装纸的长、宽应为50、40
用一张40×50的纸就够了！看着好像叠在一起是表面积小，但是实际应用就不一样了！怎么摆放这张40×50的纸都能包上看你怎么放了！
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