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Cel mai inteligent răspuns!
2014-10-02T20:11:37+03:00
A)p=AB+BC+CD+AD(AB=CD=30 CM;AD=BC=25CM)
P=2X30+2X25=60+50=110CM
b)P=3,5X4=14CM 

sper sa-ti fie de folos ;)
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