Oblicz masę dębowej deski w kształcie prostokąta o wymiarach 20cm 4cm i 1,20m.
PILNE
V=0,2m*0,04m*1,2m=0,0096m³
m=Vd
m=0,0096m³*590kg/m³
m=5,664kg
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V=0,2m*0,04m*1,2m=0,0096m³
m=Vd
m=0,0096m³*590kg/m³
m=5,664kg