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Wrapping an Equilateral Triangle (Posted on 2005-10-10) Difficulty: 3 of 5
You have an equilateral triangle you want to wrap with a square piece of paper. If the triangle has unit sides, what is the smallest square piece of paper that can be folded around the triangle such that both the front and back sides of the triangle are completely covered by the paper?

See The Solution Submitted by Brian Smith    
Rating: 3.5000 (2 votes)

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Solution by symmetry | Comment 1 of 15
side=1/cos15

area=1/(cos15)^2
  Posted by Ady TZIDON on 2005-10-11 16:36:16
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