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plsss ex 26!! dau coroana

Plsss Ex 26 Dau Coroana class=

Răspuns :

L1=340 cm
L2=340:2=170 cm
L3=170:5x4=136 cm

P=340+170+136=646 cm
a2a latura 340/2=170m
a3a latura 4/5*170=680/5=136m
P=340+170+136=646m