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UN PARALELIPIPED DRT ARE ARIA LAT =56 CMP  SI ARIA TOTALA 180 CM PATRATI .CALCUATI ARIA BAZEI PARALELIPIPEDULUI


Răspuns :

aria totala=aria laterala+2*aria bazei⇒ aria laterala=aria totala-2*aria bazei
aria laterala=180-2*56=68 cm^2