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p= 5600
v= 12x8x5 = 480 cm³ = 480 x 10^(-6) m³
m= p x V
m = 5600 x 480 x 10^(-6)
m = 2688000 x 10^(-6)
m = 2,688 kg
ukuran = 12 x 8 x 5 cm
massa jenis = 5.600 kg/m3
Ditanyakan : m ?
Dijawab :
V = 12 x 8 x 5
= 480 cm³
= 480x10⁻⁶ m³
= 4,8x10⁻⁴ m³
Jadi :
massa :
m = ρ x V
= 5600 x 4,80x10⁻⁴
= 26880x10⁻⁴
= 2,688 kg
= 2,7 kg