Question

if 75 persons can sleep in a room 25m by 10m. if each person requires 20m3 of air. find the height of the room ​

Answer 1

Answer:

air in room = volume of room

air required by 75 persons = 20×75

= 1500 m^3

dimensions of room

=> 25 , 10 and x. (x=height)

volume = 25×10× x

volume = 250x

1500 /250 = x

=> x= 6

=> height of the room 6 m

Hope it helps

Byyy.......;

Answer 2

Answer:                                        Total person=75

        Air required for one person= 20m3

                              Length of room=25m

                            Breadth of room=10m

Thus, Air required for 75 persons= 75*20m3  

Now,

Air required for 75 persons= Volume of room

That is,

           75*20m3 = lbh

          75*20m3 = 25*10*h

            1500m3 = 250h

1500m3/ 250m2=h

                     6m=h