标题: Solution for 最短距离？（图） [打印本页] 作者: salmonfish 时间: 2009-3-7 04:22 标题: Solution for 最短距离？（图）
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Xiangdang gave correct value, but used a wrong graph in his explanation, which was corrected by LiLi (should be 40.17 cm).
Top one of the following graphs should be able to explain the correct answer of this question, and the central one should result in LiLi's answer, and the bottom one is the intuition.
(The point of this question is at that intuition of a distance in "curved" space may fool you)www.ddhw.com