Answer:
3.8 kg.
Step-by-step explanation:
Density may be defined as the mass of the substance per unit of the volume. The S.I. unit of the density is kg/m^3.
The dimension of the container = 30 cm x 50 mm x 0.1 m.
30 cm = 0.3 m ( 1 cm = 1/100m)
50 mm = 0.05 m ( 1mm = 1/1000m)
Volume of container = 0.3 m × 0.05 × 0.1m
Volume of container = 0.0015 or 1500 cm^3.
Density of the container = 2.5 g/cm^3.
Density = Mass / Volume
Mass of container = Density × volume.
Mass = 2.5 g/cm^3 × 1500 cm^3.
Mass = 3750g.
Mass = 3.8 kg (approx) as 1 g = 1/1000 kg.
Thus, the correct answer is option (1).