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2014-06-02T17:32:17+03:00


L=5,6dm=56cm

l=3,4dm=34cm

P dreptunghi=2L+2l

                    =2(L+l)= 2(56+34)=2*90=180

P patrat=80/100 *Pd

=80/100*180

=144cm

Latura patrat=P patrat:4=144:4=36cm


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