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- Newsgroups: sci.math
- Path: sparky!uunet!news.smith.edu!orourke
- From: orourke@sophia.smith.edu (Joseph O'Rourke)
- Subject: Re: pyramid volume
- Message-ID: <1993Jan21.205125.15427@sophia.smith.edu>
- Organization: Smith College, Northampton, MA, US
- References: <1993Jan21.140402.25519@mr.med.ge.com> <1993Jan21.173423.11339@sophia.smith.edu> <1993Jan21.185357.28141@linus.mitre.org>
- Date: Thu, 21 Jan 1993 20:51:25 GMT
- Lines: 11
-
- In article <1993Jan21.185357.28141@linus.mitre.org> bs@gauss.mitre.org (Robert D. Silverman) 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
- >
- >A hint: Use a little vector analysis. Consider 3 non-colinear
- >vectors A,B,C in R^3. Then consider A * (B x C).
-
- Why don't you complete the thought? It may be that you assume
- knowledge more "complicated" than the intended goal...
-