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Article #2540Re: Manhole covers - why circular? [SPOILER]
From: Barry Gunn
Date: Wed, 06 Jan 1993 21:58
Date: Wed, 06 Jan 1993 21:58
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>They are round so that they cannot fall through the manhole, >regardless of the orientation. > >Any regular polygon can be oriented to fall through the hole, >unless the lip or ridge in the manhole is wide enough. > >Other shapes, anyone? > >Tim >---------- Shape it like a piece of toast with jam. Then it will only fall one way... jam side down.
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From: barryg@hplsla.hp.com (Barry Gunn) Date: Wed, 6 Jan 1993 21:58:42 GMT Subject: Re: Manhole covers - why circular? [SPOILER] Message-ID: <6670014@hplsla.hp.com> Organization: HP Lake Stevens, WA Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!uwm.edu!wupost!sdd.hp.com!hp-cv!hp-pcd!hplsla!barryg Newsgroups: rec.puzzles References: <106199@bu.edu> Lines: 13