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A comment on Why Are Manhole Covers Round? (on Microsoft brainteaser job interviews). Parent comment

Re:Why Are Manhole Covers Round? (on Microsoft brainteaser j... by TrevorJ on Monday April 14, 2008 @04:22PM (#163463)
Actually, no, a square cover would have to have a much wider flange in order to ensure that it could not fall in . (rotated 45 degrees in relation to the whole and tipped up, a square cover would fall in)
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Re:Why Are Manhole Covers Round? (on Microsoft brainteaser j... by hobbs on Monday April 14, 2008 @04:51PM (#163505)
Actually, yes, that's exactly what I was getting at. You'd have to make the square cover sqrt(2) times wider than the hole, but you could still prevent it from ever falling in. (Granted, it's not a very efficient solution, though.)
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Re:Why Are Manhole Covers Round? (on Microsoft brainteaser j... by TrevorJ on Tuesday April 15, 2008 @12:31AM (#163813)
Ok, agreed :-)
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