How many gallons does it take to fill a swimming pool that is 20 x 7.5x 1.25?

To find the gallons of the avearge pool you take the width (7.5) X the Length (20) X the depth (1.25) X 7.5 I am assuming you are using meters as there are not too many pools that are 1.25 feet deep. So the answer is 24. feet X 65 feet X 4.1 X 7.5 = 47,970 gallons or 181,000 liters.