The proper question for a 3 dimensional tank would be what is the Cubic Feet - in this case it is simply the dimensions multiplied together (assuming they are all in feet):
72 x 24 x 31 = 53,568 cubic feet = 400,716.5 gallons
If the dimensions are actually in inches, you must convert each to feet and then multiply:
(72/12) x (24/12) x (31/12) = 6 x 2 x (31/12) = 31 cubic feet = 231.9 gallons
Now if you truly want the square feet, then you would need to know which dimension is the height and ignore it. Let's say the "31" is the height, and the dimensions are in inches. This leaves:
(72/12) x (24/12) = 6 x 2 = 12 square feet
Depends on the size of the tank.
The tank has a total surface area of 4,000 square feet.
Its total surface area is 15614 square feet.
Multiply the height in feet times the width in feet times the length in feet to get square feet. Then multiply square feet times 7.47 to get the gallons.
It depends on how big it is
Volume of a cylindrical tank 8 feet in diameter and 8 feet tall is pi x 16 square feet (radius squared) x 8 feet (height) = 402 cubic feet.
Assuming that it is a tank which includes a lid, the surface area is 1300 square feet.
The total surface of the base is 2206 square feet (approx). The area of the top, if there is any, will be the same. The area of the side walls is 1582 square feet (approx).
That's going to depend on the shape of the container, especially on how much 'real estate' the base of the container covers. For discussion, imagine that the container is a square fish tank, and the four walls go straight up from the four sides of the square base. -- If the base of the tank covers 64 square feet and it holds 64 cubic feet, then the water in it is 1 foot deep. -- If the base of the tank covers 1 acre and it holds 64 cubic feet, then the water in it is 0.0176 inch deep. -- If the base of the tank covers 1 square inch and it holds 64 cubic feet, then the water in it is 9,216 feet (1.745 mile) deep.
10 ft X 10 ft square tank will hold 1000 cubic feet of water or 7480.51 gallons 10 ft round tank will hold 785 cubic feet of water or 5872.207 gallons
(Length of the tank, in feet) x (Width of the tank, in feet) x (Height of the tank, in feet).
Well that depends on what you mean. In a water tank the typical measurement of concern is volume, in this case cubic feet. To calculate volume of a rectangular prism, (say, a tank) you multiply length by width by height, or:530 ft L X 165 ft W X 29 ft H = 2,536,050 cubic ft!If you're looking for area of the bottom of the tank, this is measured in square feet. To determine the area of a rectangle you multiply base times height, or:530 ft X 165 ft = 87,450 square ft.