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प्रश्न
The dimensions of a hall are 10 m × 7 m × 5 m. If the density of air is 1.11 kg m-3, find the mass of air in the hall.
उत्तर
The dimensions of hall 10m × 7m × 5m
i.e. V350 m3
Density of air(D)= 1.11 kg m-3
M = V × D 350 × 1.11 =388.5 kg
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