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p=15 cm
l=5 cm
t=10 cm
m=9 gr
Ditanya: q(rho)=....?
Jawab:
Vkubus= p x l x t
V=15 x 5 x 10
V=750 cm³
q=m/V
q=9/750
q=0,012 gr/cm³ = 12 kg/m³.