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massa jenis(rho)=m/v
=m/3/4
=m.4/3
=4m/3
trima kasih
Vf=3/4=0,75 bagian
Vb=1 bagian
pf=1 gr/cm^3
dit:pb=...?
pb=Vf.pf/vb=0,75.1/1=0,75gr/cm^3