Weight of air

What is the weight of air in the living room measuring width 8 m length 5 m and height 3.1 m? Air density is ρ = 1.2959 kg/m³.

Correct answer:

m =  160.7 kg

Step-by-step explanation:

$$\begin{gathered} a=8\text{ m } \\ b=5\text{ m } \\ c=3.1\text{ m } \\ \rho =1.2959{\text{kg/m}}^3 \\ V=a\cdot b\cdot c=8\cdot 5\cdot 3.1=124{\text{m}}^3 \\ m=\rho \cdot V=1.2959\cdot 124=160.7\text{ kg} \end{gathered}$$

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