Wiki User
∙ 12y agoOrdinarily I'd pass on this one, because you haven't said what the "21 foot" is ...
whether it's a diameter, a circumference, or the side of a square pool. But this
particular volume question promises an interesting answer:
I'll assume that the pool is round, and its diameter is 21 feet.
Volume = (pi) (radius)2 (depth) = (pi) (10.5)2 (1) = 110.25 pi = 346.36 cubic feet = 2,590.96 gallons (rounded)
At 1 minute per gallon, it'll take 43hours10minutes 57seconds to fill the pool.
Wiki User
∙ 12y ago4400 gallons, or 4,398.24 gallon rounded off.
7.48 gallons fill one square foot.
1 Gallon
how many gallons of water will a tank that is 5 foot by 4 foot by 8 foot hold
7.518 gallons.
WolframAlpha, a new search engine gives a UK gallon of water at 0.1337 cu.ft so your pool should take 6,462 gallon to fill, give or take a cupful. Check it out!
4400 gallons, or 4,398.24 gallon rounded off.
a gallon or so
To give you an idea, a 36-foot by 18-foot by 5-foot deep pool takes about 24,000 gallons of water to fill.
7.48 gallons fill one square foot.
One gallon of water is equivalent to approximately 0.1337 cubic feet.
7.48052 US gallons per cubic foot.
1 Gallon
it depends on the dimensions of the pool a 5 foot deep tub would fill up a lot faster than an Olympic sized pool.
how many gallons of water will a tank that is 5 foot by 4 foot by 8 foot hold
There are 7.48 gallons in one cubic foot. So, there are 0.13368 cubic feet per gallon
7.518 gallons.