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51问答网 > 蛋糕店有一种包装盒为圆柱形，底面直径10厘米，高6厘米的盒装帮帮饼干，销量很好，每盒售价5元，现推

蛋糕店有一种包装盒为圆柱形，底面直径10厘米，高6厘米的盒装帮帮饼干，销量很好，每盒售价5元，现推

2025-04-02 15:26:49

推荐回答（3个）

回答1：

原有直径10cm，底面积25πcm²，底面周长10πcm，侧面积60πcm²，表面积2*25π+60π=110πcm² 售价5元
另一种包装：半径8cm，底面积64πcm²，底面周长16πcm，侧面积96πcm²，表面积2*64π+96π=224πcm²。
比之前多了大约103.6%的表面积，所以价格至少提升103.6%。所以定价为5*（1+103.6%）=10.18 所以定价11元比较合适

回答2：

64÷25×5≈13

回答3：

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