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Posted by markr on 28/7/2009, 5:00 am, in reply to "Circles ahoy extra"
Perhaps this could be simpler, but this is what I got:
Let x = sqrt(-3r^2 - v^2 - w^2 - 4rv + 4rw + 2vw)
Then the long side is:
2[r+u-x + v(2r + v - w)/x]
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