Q: How many square liters in a 8 feet by 10 feet pond?

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1359.2 litres, approx.

1 acre = 43,560 square feet If the sides of the pond are straight ... its cross section area is 1/4 acre all the way down to the bottom ... then its volume is (43,560/4) x (5) = 54,450 cubic feet = 407,314.3 gallons

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It's unlikely that your pond has vertical sides and is 3' deep everywhere, but if it were, it would hold 18 * 7 * 3 = 378 cu. ft. of water. Converting the dimensions to metric at the start makes everything easier. 378 * (12^3) * (2.54^3) give you the number of cc's, dividing that by 1000 gives you the number of liters (10703). Dividing THAT by 3.7854 (liters/gallon) gives you about 2828 gallons. A typical pond, however, probably slopes from very shallow at the periphery to maximum depth near the center. This means it likely holds 30 - 40% less than if it had steep vertical sides and a consistent depth (like a typical above-ground pool). Your pond is probably on the order of 1500 - 1900 gallons.

1,000,000 US gallons is about 134,000 cubic feet. A round tank of 56 feet diameter by 56 feet high will hold 1 million US gallons. Also a round pond of about 413 feet diameter by 1 foot deep.

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9 Acres = 36,421.7 square meters. 4 feet = 1.2 meters. Area x length = volume; 36,421.7 x 1.2 = 43,706 cubic meters. Cubic meters is a volume, which can be converted to liters, 1 cubic meter is 1000 liters. So your pond has 43,706,000 Liters. 1 gallon is 3.78 liters, so divide by 3.78 and your pond has 11,545,903.7 Gallons.

32,000

Area of fish pond: pi*9^2 = 81*pi square feet

21,825 square feet. For example, a rectangular pond about 220' x 100'. Or a circular pond about 165' in diameter.

Volume = (surface area) x (depth) = 217,800 cubic feet = 1,629,257.1 gallons (rounded)

If 75 feet is the circumference of the pond then its radius works out as 12 feet rounded to the nearest whole number and its surface area is pi*12^2 which is 144*pi square feet.

1

liters

If the pond is uniformly 6-feet deep it would contain about 1,955,109 gallons of water.

How long is a piece of string? LOL =]

Liters. Or MegaLiters (x1 000 liters)

1359.2 litres, approx.