How many gallons of water are there in a 15 X 24 foot swimming pool that is 4 feet deep?

If the pool is 15 feet long and 4 feet wide, that would be 60 sq. feet of area. Now you would need to know the depth. Multiply 60feet by the depth and then multiply by 7.48 gal. per sq. feet for the total capacity. Is the pool round by any chance?