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标题: [求助]GWD 2-Q5 [打印本页]

作者: lololo 时间: 2005-1-3 11:04 标题: [求助]GWD 2-Q5

The interior of a rectangular carton is designed by a certain manufacturer to have a volume of x cubic feet and a ratio of length to width to height of 3:2:2. In terms of x, which of the following equals the height of the carton, in feet?

A. 3√x

B. 3√[(2x)/3]

C. 3√[(3x)/2]

D. (2/3) 3√x

E. (3/2) 3√x

这题我的理解换算不出最后的答案，不知道是不是读题的理解错误，请问哪位牛牛可以解释一下，谢了！

作者: mikejia 时间: 2005-1-3 21:05

12a^3=x =>2a=(3次根号下(x/12) )*2

作者: sammen 时间: 2005-1-3 21:17

是不是B啊？

作者: mikejia 时间: 2005-1-3 21:58

是B

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