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![[Post New]](/templates/default/images/icon_minipost_new.gif) 8 Feb 2008 19:44:32 IST
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vsquare = usquare-2ax where x = thickness of planck
361/400usquare=usquare-2ax
therefore 2ax=39usquare/400
let no of planks be n
0=usquare-2anx
therefore-n=usquare/2ax=400/39
=10.something=11 should be the ans
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Impossible To be Impossible is Impossible |
this reply: 10 points
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