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m=masa
V=objętość=0,5dm3=500cm3
d=m/V
m=V*d
m=500cm3*(2,17g/cm3)
m=1085g
Odp.Ta bryła waży 1085 gramów.
v=0.5dm3=500cm3
d=m/v
m=d*v
m=2.1*500=1050g