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标题: 一个数学问题求翻译 [打印本页]

作者: iamf    时间: 2003-1-27 23:54     标题: 一个数学问题求翻译

A paint roller 14 inches wide with a diameter of 4 inches is being used to paint a wall. If the roller can be used for 3 exact revolutions for every one time that it is dipped in paint, what is the area of wall space that can be painted if the roller is dipped in paint 3 times?

The answer is 504pi

就是看不懂题目的意思,求大侠解释一番:)
作者: Cherryfavour    时间: 2003-1-28 04:37

一个刷浆用的滚子(是个圆柱体),宽是14,侧面直径是4。如果该滚子沾一次浆可以刷正好完整且不重复的3次,且如果沾了三次浆就刷完了一面墙,问该面墙的面积。

先求圆柱体的侧面积再乘以9
作者: iamf    时间: 2003-1-28 22:38

谢谢大侠的说  :)




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