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p = 5 cm
l = 4 cm
t = 2 cm
m = 80 gram
Ditanyakn : ρ ?
Dijawab :
V = p x l x t
= 5 x 4 x 2
= 40 cm³
Jadi massa jenis :
ρ = m/V
= 80/40
= 2 gr/cm³
p= 80 / 40
= 2 gram/ cm
= 0,02 kg / m pangkat 3