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a=10cm=0,1m
b=5cm=0,05m
c=2cm=0,02m
m=893g=0,893kg
q=m/V=m/(a*b*c)=893g/(10cm*5cm*2cm)=893g/100cm^3=8,93 g/cm^3
lub
q=m/V=m/(a*b*c)=(0,893kg)/(0,1m*0,05m*0,02m)=
=(0,893kg)/(0,001m^3)=8930 km/m^3