(25 cubic feet) - (20.7 cubic feet) = 4.3 cubic feet
If you see a specification on a refrigerator as 18 cubic feet, for example. This represents the capacity (how much volume of stuff that you can fit into the fridge).
2.5 cubic feet of water weighs about: 156 pounds.
10pounds
On average, 8 cubic feet of concrete can weigh around 4,000-4,500 pounds, depending on the density of the concrete mix.
The weight of 0.4 cubic feet depends on the density of the material. To convert volume to weight, you need to know the specific density. If we assume an average material density of 100 lbs/cubic foot, then 0.4 cubic feet would weigh 40 lbs.
The weight of 2.25 cubic feet of water is approx 4495 pounds-force (lbf).
It depends on the density of the substance
Roughly 72 pounds.
Wood has a wide range of densities.
The weight of any volume of water will depend on the gravitational force acting upon it. 57 cubic feet of water would weigh nothing in a spaceship, for example.
Around one hundred pounds.