A round swimming pool 12 feet across by 4 feet deep will hold 452 ft3 which converts to 3,381 gallons
20 was the previous answer. In order to calculate the amount of water used, you would need to know what the gpm (gallons per minute) you have at where you are running the sprinklers. Some places are between 10 and 20 gallons of water per minute. Are you on city water? Your own well? Rural water sharing? They all play a part in the final answer.
Swimming is fun because it is completely different from any other sport out there. You swim in a completely different environment, the water, and you get a full body workout. Not only that, but it is more of an individual sport than a team sport. This is not necessarily a good thing to everyone, but I like to swim because I can work on improving individually. Swimming is also fun because of all the neat tricks you can do in the water. Plus, on a hot day, what would you rather do, than swim? Swimming is fun because you get cooled off when it is a hot day. You can play games in the water or next to the water, or just chill out for awhile.
Would you drink a glass of water that was brown or green with little creatures swimming in it? Water treatment includes taste & order control as well as making it bacteria free and clear and filters remove the mystery materials. (iron, flock, sediment)
they would gather
About 7300 gallons
If 20' is the circumference, then the answer is 833.4 gallons.
Approximately 4,400 gallons.
To calculate this the depth would also be needed
I would say probably around 50-200 gallons.
A 100-foot round pool filled with 1.5 feet of water would be holding about 88,500 gallons.
To fill your 18-foot round pool to a depth of 48" would require about 7,646 gallons of water. If you filled it to 36", the total would decrease to about 5,735 gallons.
It would fill about 91,000 residential in-ground swimming pools.
An 8-foot round pool filled to a depth of 13 inches would contain about 410 gallons of water.