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- Newsgroups: sci.math
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- From: bs@gauss.mitre.org (Robert D. Silverman)
- Subject: Re: pyramid volume
- Message-ID: <1993Jan21.185357.28141@linus.mitre.org>
- Sender: news@linus.mitre.org (News Service)
- Nntp-Posting-Host: gauss.mitre.org
- Organization: Research Computer Facility, MITRE Corporation, Bedford, MA
- References: <1993Jan21.140402.25519@mr.med.ge.com> <1993Jan21.173423.11339@sophia.smith.edu>
- Date: Thu, 21 Jan 1993 18:53:57 GMT
- Lines: 16
-
- In article <1993Jan21.173423.11339@sophia.smith.edu> orourke@sophia.smith.edu (Joseph O'Rourke) writes:
- :In article <1993Jan21.140402.25519@mr.med.ge.com> carl@crazyman.med.ge.com (Carl Crawford) writes:
- :>
- :>how do show that the volume of a pyramid is
- :>
- :> 1/3 * area of base * altitude
- :>
- :>without using calculus?
-
- A hint: Use a little vector analysis. Consider 3 non-colinear
- vectors A,B,C in R^3. Then consider A * (B x C).
- --
- Bob Silverman
- These are my opinions and not MITRE's.
- Mitre Corporation, Bedford, MA 01730
- "You can lead a horse's ass to knowledge, but you can't make him think"
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