Question

Length breadth height of a box are 4cm 12cm and 1m, if density of air is 1.2 kg/ m. The mass of air is?

Answer 1

Answer:

5.76 gm

Explanation:

the volume of air in the box = (4/100 x 12/100 x 1) = 48 x 10⁻⁴ cubic meter

∴ the mass of the air = density of air x volume of air in the box

mass = 1.2 kg/cubic meter * (48 x 10⁻⁴) cubic meter

         = 1200 x 48 x 10⁻⁴ gm = 5.76 gm