posted by cheryl .
a room is 18ft long, 15ft wide and from floor to ceiling is 8ft6inches. what is the rooms volume in cubic meters?
i have 6.498716 is this correct?
what is the mass of air in the room in kilograms assuming the density of the air is 1.2g/l and the room is empty of furniture.
i have mass of 1.2g/g=m/6.498716
then said m=1.2/6.498716 with an answer o 5.415596667 for the air density.
is this correct
6.4987 cubic meters is off by a factor of 10; should be 64.987 but that is too many significant figures.
I don't think your soln is correct for #2. mass = volume x density. You divided d/v which is not right.