Question

the dimensions of a hall are 10m×7m×5m. If the density of air is 1.11kg/m3, find the mass of air in that hall

Answer 1

MASS OF AIR IS 388.5 kg.

Given:

• Dimensions of hall = 10 m × 7 m × 5 m.
• Density of air in hall = 1.11 kg/m³.

To find:

Mass of air in that hall ?

Calculation:

Density is defined as the mass of a substance per unit volume. So, mass can be calculated as the product of volume and density.

$mass = volume \times density$

$\implies \: m = (l \times b \times h) \times \rho$

• l is length, b is breadth and h is height.

$\implies \: m = (10 \times 7 \times 5) \times 1.11$

$\implies \: m =350\times 1.11$

$\implies \: m =388.5 \: kg$

So, mass of air in the hall is 388.5 kg.