The dimensions of a hall are 10× 7m× 5m. If the density of air is 1.11 kgm−3. Find the mass of air in the hall.
The dimentions of a hall are 10metre*7metre*5metre . If the density of air is 1.11 kg m-3 , find the mass of air in the hall
How many persons can be accommodated in a dining hall of dimensions (20m×15m×4.5m), assuming that each person requires 5m3 of air?
(a) 250 (b) 270 (c) 320 (d)300