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- From: brock@NeXTwork.Rose-Hulman.Edu (Bradley W. Brock)
- Newsgroups: sci.math
- Subject: Re: pyramid volume
- Date: 21 Jan 1993 19:05:08 GMT
- Organization: Computer Science Department at Rose-Hulman
- Lines: 18
- Message-ID: <1jms54INN465@master.cs.rose-hulman.edu>
- References: <1993Jan21.140402.25519@mr.med.ge.com>
- Reply-To: brock@NeXTwork.Rose-Hulman.Edu (Bradley W. Brock)
- NNTP-Posting-Host: g210b-1.nextwork.rose-hulman.edu
-
- 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?
-
- Certainly the volume is proportional to the height so it is sufficient to find
- the volume of one such pyramid. Hence assume the height is 1/2*s where s is
- the length of one side of the square base. 6 such pyramids fit together to
- form a cube of volume s^3 and hence each has volume s^3/6=1/3*s^2*s/2.
-
- --
- Bradley W. Brock, Department of Mathematics
- Rose-Hulman Institute of Technology | "Resist not evil.... Love your
- brock@nextwork.rose-hulman.edu | enemies."--Jesus of Nazareth
-