Massa jenis besi 7,789/cm3 . Berapa kg massa sepotong besi yang mempunyai ukuran panjang 20cm,lebar 5cm,dan tebal 2cm?
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liliput01
Diket: ρ = 7,78 g/cm³ = 7,78 x 1000 kg/m³ = 7780 kg/m³ p = 20cm, l = 5cm, t = 2cm Dit: massa (m)....? V = p x l x t V = (20x5x2)cm = 200cm³ = 200/1000.000m³ V = 0,0002m³ m = ρ x V m = 7780 x 0,0002 m = 1,556 kg = 1,6 kg
ρ = 7,78 g/cm³ = 7,78 x 1000 kg/m³ = 7780 kg/m³
p = 20cm, l = 5cm, t = 2cm
Dit: massa (m)....?
V = p x l x t
V = (20x5x2)cm = 200cm³ = 200/1000.000m³
V = 0,0002m³
m = ρ x V
m = 7780 x 0,0002
m = 1,556 kg = 1,6 kg