411.4 US gallons, approx.
With US gallons = 7.52 " With UK gallons = 9.03 "
A volume of 453 cubic inches is filled by 1.961 gallons of water.
You need the cross sectional area, not simply the width.
The height of 400 gallons of water would depend on the shape of the container. 400 US gallons has a volume of about 206,000 cubic inches, so if the inside of the container was about 59 inches square, it would also be about 59 inches high.
From Google search: gallons of water in a rectangular aquarium = length (in.) x width (in.) x height (in.) /231. Hence, 12 x 12 x 96 = 13824 /231 = 59.844155 gallons.Answer: Given: Length = 96 inches. Width = 12 inches. Height = 12 inches. We need to find the number of gallons of water it can have. First, we need to find the capacity. That is the volume of the container. Volume = length * width * height cubic units. Volume = 12*12*96 cubic inches. Volume = 13824 cubic inches. The capacity is 13824 cubic inches. We need to change cubic inches to gallons. 1 gallon = 231 cubic inches. So, 1 cubic inch = 1/231 gallons 13824 cubic inches = 13824 * (1/231) gallons = 59.84415 gallons So, it can have 59.84415 gallons of water.
2 mi2 x 2 in = 9.293x106 ft3 = 6.951x107 gallons
One US Gallon has 231 cubic inches, and the area that you've given is 36 cubic inches. So, 36/231 gallons is the exact answer, which is approximately .1558 gallons (15.6% of 1 gallon)
40 square feet * 2 inches = 40*(1/6) = 6.66... cubic ft = 41.5 UK gallons or 49.9 US gallons (approx).
11,669.61 (rounded)
Square inches is an area, not a volume. You can't convert square inches to gallons. If you meant CUBIC inches, then 682 cu in is 2.95 US Liquid gallons or 2.53 US Dry Gallons.
231 cubic inches == (presumed that you meant cubic inches, which like gallons is a measure of volume, rather than square inches, which is a measure of area) 1 US gallon = 231 Cubic inches (presuming you meant cubic inches, which like gallons is a measure of volume, rather than square inches, which is a measure of area)
Area of a circle is pi*r^2 (Pi (r squared)), so 25.5^2*3.1415926 = 2,082.42in/sq * 33" equals: 67,413 cubic inches of water. As there are 231 cubic inches in a gallon, the said geometric solid will contain: 291.8315 gallons.