ANSWER
One cubic foot of fresh water: rule-of-thumb is 7.5 gallons (US) per cubic foot with each gallon weighing 8.33 pounds, so 1 cubic foot weighs about 62.4 pounds. one cubic inch weighs (62.4 / 12 /12 /12=) 0.036 pounds or about 1/2 ounce. Salt water is 2.5 % heavier than fresh water. Heavy water in nuclear reactors is a bit over 10 % heavier than fresh.
.1337 cu ft / gal 7.481 gal / cu ft
There are 0.13368 cubic feet in a gallon.
1 Imperial gallon = 0.1605 cu ft (to 4 sig fig)
The cid for a 5.3 litre engine is 323.7 cu. in.Convert litre to gallons, gallons to cu.ft., cu. ft. to cu. in. 1 litre =.264172 Gallons 1 gallon = .13378 cu. ft. 1 cu. ft. = 1728 cu in. 1 litre =.264172 x .13378 x 1728 = 323.7 cu.in.
The answer to your question is: No.The gallon is a unit of volume.A gallon can have different masses, depending on what's in it.And if the gallon is empty, then it has no mass at all.Weight depends on the mass and the acceleration of gravity where the mass is.The same mass doesn't even always have the same weight.
One Imperial gallon is 0.1605 cubic feet.
1 gallon of a liquid (any liquid, since "gallon" is a unit of volume) is about 231 cu in, or 0.13368055555555... cu ft. A cubic foot contains about 7 1/2 gallons (7.480519)
28 gallons (UK) = 4.5 cu ft
volume = pi * r 2* l = 3.1416*1.252 * 500 = 2454.375 cu ft 1 cu ft = 6.2288 imp gallon 2454.375 cu ft = 15287.811 gallons or say 15288.
The answer is specific to the product in the cu ft. A cu ft of water will be different than that of a cu ft of feathers ETC.
There are 40 (5 x 8) pints in a 5 gallon vessel. An imperial pint (20 fl oz) is 0.020068 cu ft. Thus 40 x 0.020068 = 0.80272 cu ft. QED
.07 (No. That is incorrect.) Actually there are 27 cu ft in a cu yard or .037 cu yards in a cu ft.