@bacilus | ||
Fid da 2sids of a scalin 1sid 9cm &perimita 22 area is 20cm2 |
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@bacilus | 3 April 12 | |
Heros f *s(s-a)(s-b)(s-c) *=square root 11(11-9)(11-x)(11-(13-x)=400 x=7 &6
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