Equilateral Triangle

A box has a hole of Equilateral Triangle. The side of the Equilateral Triangle is 1. The box has some coins in Equilateral Triangle shape. What is the minimum length of the side of a coin so that it cannot goes through the hole?

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• 回复：Equilateral Triangle -blabla81- ♀ (12 bytes) () 01/17/2004 postreply 10:51:00

• is it -atom9- ♀ (136 bytes) () 01/17/2004 postreply 12:45:00

• 1 is not enough. -yma16- ♀ (120 bytes) () 01/17/2004 postreply 18:52:00

• 2/sqrt(3)? -IG- ♀ (0 bytes) () 01/17/2004 postreply 19:07:00

• agree,forgot that -atom9- ♀ (183 bytes) () 01/17/2004 postreply 21:57:00

• Could you give the details? -Yma16- ♀ (243 bytes) () 01/18/2004 postreply 07:05:00

• details -atom9- ♀ (970 bytes) () 01/18/2004 postreply 18:11:00

• 回复：details -yma16- ♀ (767 bytes) () 01/18/2004 postreply 21:31:00

• same thing -atom9- ♀ (768 bytes) () 01/19/2004 postreply 01:20:00

• Thank you! But -yma16- ♀ (222 bytes) () 01/19/2004 postreply 06:16:00

• 回复：Thank you! But -atom9- ♀ (433 bytes) () 01/19/2004 postreply 13:33:00