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From: datanguay@watdaisy.UUCP (David Tanguay)
Newsgroups: net.puzzle,net.math
Subject: Re: Polar Bear Problem Sequel
Message-ID: <7458@watdaisy.UUCP>
Date: Mon, 21-Oct-85 19:49:01 EDT
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Posted: Mon Oct 21 19:49:01 1985
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Xref: watmath net.puzzle:1057 net.math:2405

> By the way: heat causes metal to expand.  If you have a piece of metal
> with a spherical hole in it, does the hole expand, contract, or remain
> the same when the metal is heated?  What about a square hole?  I don't
> know the answer!
> 
> ...ranjit bhatnagar

Physically speaking, it beats me, too, but coopers bind their barrels by
heating a metal ring, placing it over the barrel pieces, and then cooling the
ring.  This would mean that the hole would expand when the metal is heated.
This looks like a job for second year calculus students.

David Tanguay