How many gallons of water should be added to raise water level 1 inch in a 12 by 24 foot pool?

Answer 1

For simplicity, let us convert everything to SI units.

1 inch = 0.0254 m
12 foot = 3.6567 m
24 foot = 7.3152 m
1 gallon = 0.00378541 m^3

Thus, volume is 0.0254m*3.6567m*7.3152m = 0.6794370927 m^3

Determining how many gallons of water are required to raise water level,

0.6794370927 m^3 / 0.00378541 m^3

= 179.5 gallons