One cubic foot of water is about 7.48 (7.48052) US gallons.
One cubic foot of water is 7.4805 gallons.
steel
There are 7.481 gallons in one cubic foot.
One inch of rain over one square foot is 1/12 cubic foot of water. A cubic foot of water weighs about 62.4 pounds. 1/12 of that is about 5.2 pounds.
One foot is 30.45cm if I am not mistaken. That is 3.45dm One liter of water fits in one cubic decimeter. The rest is up to you.
One cubic foot of sea water contains about 7.5 gallons.
The weight of one square foot of water is zero pounds. A square foot is a measurement of area, not volume. Since a square foot has no height, it is not possible to fit even a single hydrogen atom inside a square foot. The weight of a cubic foot of water (a cube with each side equal to one foot) is about 62.42 pounds. The reason that I saw "about" is because the density of water changes according to its temperature, so that a cubic foot of water at 32 degrees Fahrenheit will weigh 62.42 pounds, but at 212 degrees Fahrenheit a cubic foot of water weighs 59.83 pounds.
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One square foot
One cubic foot = 7.48 US gallons.
The Quality Home Systems website offers central vacuum pipe. A regular 5 foot length of pipe is $7.50. A 20 foot bundle of 5 foot length is $29.00 and an 80 foot bundle of 5 foot length is $112.00.