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ukuran balok = 10 x 5 x 4 cm = 0,1 x 0,05 x 0,04 m
m = 1 kg
dit : ρ kg/m³ ?
dijawab :
V = 0,1 x 0,05 x0,04
= 0,0002 m³
jadi massa jenis :
ρ = m/V³
= 1/0,0002
= 5000 kg/m³
= 5x10³ kg/m³