How many persons can sit in a hall with length 40m, breadth 30m and height 10m if 1 person needed 0.75m square area to sit? How much air will come in each persons share?
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area of the the floor of the hall is equal to length X breadth therefore the area of the floor is equal to 40 metre x 30 metre is equal to 120 metre square
therefore number of people can sit is equal to 120 metre square divided by 0.75 metre square is equal to 160
therefore 160 students can sit in the hall
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