A round swimming pool 12 feet across by 4 feet deep will hold 452 ft3 which converts to 3,381 gallons
11,659.3 gallons
10,000 to 11,000 gal.
1-2 gallons of muriatic acid will break down the buffer solution(alkalinity in the water). Will then probably have to raise pH back up
Go to http://www.havuz.org/pool-calculators.htm
13 x 21 x 4 = 1,092 cubic feet = 8,168.7 gallons (rounded)
V = 7,943 ft3
A=BxH =7x3 =21ft squared
Area of triangle = 1/2 (base x height) = (8 x21)/2 = 84 sq.ft.
Call your local water company.
1 US Gallon is 0.133681 cubic foot. So 45,000 Gallons would require a tank of approx 6000 Cu Ft [6 015.625 cubic feet, to be precise] A standard-sized freestanding circular tank with a 21ft base and height of 17ft 11in has a nominal capacity of 45,000 Gallons.
No. If so, what would be the height of someone at 80 years of age, when they were 1ft at birth and 6ft tall at 20 years? (21ft).
12ft by 21ft is equal to 4m by 7m or 28 square meters.
No. Seven yards equal 21ft. 1 yd = 3 ft 7yd x 3ft/yd = 21ft