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a=5cm=0,05m
b=5cm=0,05m
c=5cm=0,05m
q=21410kg/m³
q=m/V
m=q*V
m=q*a*b*c
szukane:
m=?
Obliczenia:
m=21410kg/m³*0,05m*0,05m*0,05m
m=21410kg/m³*0,000125m³
m=2,67625kg