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m = 135 gram = 0.135 kg = 1.35 x 10⁻² kg
V = 50 cm³ = 50 x 10⁻⁶ m = 5 x 10⁻⁵ m³
Sehingga,
Nomor 2.
m = 515 gram = 0.515 kg = 5.15 x 10⁻¹ kg
p = 1.03 x 10³ kg/m³
Maka,
Nomor 3.
V = 4 m³
p = 1.5 x 10³ kg/m³
Sehingga,
Nomor 4.
Jika benar hanya menghitung volume bensin, cukup identifikasi volume tabungnya saja.
Diameter = 80 cm artinya r = 40 cm