Depends on the width and depth of the trough.
The volume of the tank is (81 x 32 x 39) = 101,088 cm3 = 101.088 liters = 26.705 gallons (rounded)That's the volume of the tank up to the rim. We have no way of knowinghow much water may be in it.
What's the depth? This is essential to find cubic feet. Depth x width x length = ? Cubic Feer
It depends on the size of the fountain. You have to calculate the height, depth, and width to figure out how much space is needed.
gallons or liters
You gave length and width measurements, but you're missing the depth measurement, which is required in order for this question to be answered.
Here's a formula for round pools: distance across*distance across*depth*5.9 for rectangles: length*width*depth*7.5 or for a deep end: length*width*((shallow end depth + deep end depth)/2)*7.5 so in your case, 21*21*4.3*5.9=11000 gallons
volume = depth x length x width or volume = depth x area Your area is 1m² and your depth is 25cm or 0.25 m so.... Volume = .25m x 1m² = .25 m³
To calculate the volume of water needed to fill a rectangular pool, multiply the length, width, and depth together. Assuming the depth is 4 feet, the volume of this pool would be 48 ft x 24 ft x 4 ft = 4,608 cubic feet of water.
1,000,000 cubic feet
lenght 48 width 24 heigth 36 is 179.53246753246754 gallons of water or 2872.51948051948 cups :)
The number of cubic feet would be 608 (19 x 32) times the maximum depth of the water, assuming the pool is the same depth throughout. Otherwise, you would multiply the length, width, and depth of each section separately (usually the same width is shared) and then add both results. Once you get cubic feet, you would use a formula to convert that to gallons.