Question

70 persons can sleep in a room 30m by 10m.If each person requires 18m3 of air . Find the height of the room

plzzz answer​

Answer 1

Answer:

4.2m

Step-by-step explanation:

70 people require 18m3 of air, so therefore 70 people will take up 18 times 70)m of air.

therefore 18m3 times 70 = 1260m3

1260m3 is now the new volume

therefore 1260m3 = length x breadth x height

1260m3 = 30m x 10m x h

1260m3 = 300m2 x h

h = 1260m3 / 300m Note that m3 / m2 = m

therefore h = 4.20m Always round off to the second decimal place unless stated otherwise.