IIT JEE , AIEEE Forum - Mathematics , Vectors - how to find volume of parallelopiped if diagonals are given instead of its edges!

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30 Mar 2008 18:30:34 IST

Subject: how to find volume of parallelopiped if diagonals are given instead of its edges!

pink_ele (1380)

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let a+b+c=4j-8k
a+b=6i+6k
a-b=4j+2k,
get a b n c as
a=3i+2j+4k
b=3i-2j+2k
c=-6i+4j-14k
thus vol is scalar triple product of abc

nobody is wrong
even a stopped clock is right twice a day

this reply: 7 points (with 1 Olaaa!! Perrrfect answer.

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