When concentrations of formaldehyde in the air exceed 33 mu g divided by ft cubed μg/ft3 left parenthesis 1 mu g equals 1 microgram equals 10 superscript negative 6 baseline gram right parenthesis comma 1 μg=1 microgram=10−6 gram, a strong odor and irritation to the eyes often occurs. one square foot of hardwood plywood paneling can emit 3365 mu g μg of formaldehyde per day. a 3ft by 9ft sheet of paneling is attached to a wall in a room having floor dimensions of 10 ft by 10 ft and height of 9ft?