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प्रश्न
How many persons can be accommodated in a big-hall of dimensions 40 m, 25 m, and 15 m; assuming that each person requires 5 m3 of air?
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उत्तर
[No. of persons = `" Vol. of the hall"/"Vol. of air required for each person"`]
Length of the hall = 40 m
breadth = 25 m
Height = 15 m
Volume of the hall = `"L" xx "B" xx "H"`
= `40 xx 25 xx 15`
= 15000 m3
The volume of the air required for each person = 5m3
No. of persons who can be accommodated = `" Volume of the hall"/"Volume of air required for each person"`
= `(15000 "m"^3)/(5 "m"^3)`
= 3000
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