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15问答网 > 一种品牌的牙膏出口处直径为4毫米，小明每次刷牙都要挤出1厘米长的牙膏

一种品牌的牙膏出口处直径为4毫米，小明每次刷牙都要挤出1厘米长的牙膏

2025-04-07 14:03:19

推荐回答（4个）

回答1：

牙膏总体积为：
4*10*36=1440立方毫米。

1440立方毫米改口后可以挤次数：
1440除以（6*10）=24次

回答2：

4*3.14*10*36=1440*3.14
1440*3*14*（6/2）*（6/2）*3.14*10=16（次）

回答3：

V=10*((pi*4^2)/4)*36=10*((pi*6^2)/4)*n
=> 4^2*36=6^2*n
=> n=16

回答4：

应该56次吧

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