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Pp= 9*6
Pp= 54
Pb1= 9*5
Pb1= 45
Pb2= 6*5
Pb2= 30
Pc= 2*54+ 2* 45+ 2* 30
Pc= 108+ 90+ 60
Pc= 258
Objętość
V= a*b*c
V= 9*6*5
V= 270