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- From: dan@danberg.llnl.gov (Dan Bergmann)
- Newsgroups: rec.puzzles
- Subject: Two Circles Puzzle
- Keywords: geometry
- Message-ID: <C1IyDB.2K5@fastrac.llnl.gov>
- Date: 27 Jan 93 18:07:59 GMT
- Sender: news@fastrac.llnl.gov
- Organization: Lawrence Livermore National Laboratory
- Lines: 32
- Originator: dan@danberg.llnl.gov
-
-
- I'm new to this newsgroup, so I hope this hasn't been asked before (it
- wasn't in the FAQ).
-
- This question was asked on an SAT test about a dozen years ago.
-
- Two circles are next to each other and touching at one point (one is NOT
- inside the other). The larger circle has twice the radius of the smaller
- circle. The smaller circle rolls around the large one until it comes back
- to its original starting position. How many revolutions does it make about
- its center?
-
- The testing service got the problem wrong, some kid in Florida complained
- that he got it right but was not given credit, and the story made it into
- the newspapers.
-
- --
-
-
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- ** Dan Bergmann (510) 423-6765 **
- ** mail stop L-262 **
- ** Lawrence Livermore National Lab dbergmann@llnl.gov **
- ** Livermore, CA 94550 **
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