7.103 gallons.
220
The question used the word around instead of diameter. I failed to carry a naught in my first answer, but I think the answer to his question would be 22 Gallons.
PS, I'm no math major.
how many gallons of water does a swimming pool 15 feet by 4 feet deep hold
How many imperial gallons is 30 cubic feet of water?
1,987 cubic feet = 14,860 gallons of water.
There are 8,483 gallons in 1,134 cubic feet of water.
4,088 cubic feet = 30,580 gallons of water.
31 cubic feet of water equates to ~231.9 gallons.
44,260 gallons of water.
58,168.52 gallons.
Four cubic feet is 29.92 gallons.
Six acre-feet of water is about 1,955,109 US gallons.
48,000 cubic feet is about 359,065 US gallons of water.
841.6 gallons