The dimensions of a cinema hall are 100m, 50m and 18m. How many persons can sit in the hall, if each person requires `150 m^3` of air?

Explanation

Dimensions of cinema hall`=100 mtimes50 mtimes18 m`
Length`=100 m`
Breadth`=50 m`
Height`=18 m`
Each person requires`=150 m^3` of air
Volume of cinema hall`=l\timesbtimesh=100times50times18=90000 cm^3`
Number of person who can sit in cinema hall`=`Volume of hall`/`Volume of air required by one person`=90000/150=600`
`therefore` `600` people can sit in the cinema hall.