None.
A pound is a measure of mass while a cubic foot is a measure of volume. The two measure different things and it makes no sense at all to try to convert from one to the other. You could easily lift 16 cubic feet of air using 1 hand but 16 cubic feet of lead is quite another matter!
1,000 pounds of water is equal to about 16 cubic feet.
16 cubic feet = 27,648 cubic inches
Square feet = length by width ONLY Cubic feet = length by width by height Square feet = 16 x 16 = 256 square feet Cubic feet = 16 x 16 x 16 = 4096 cubic feet
You need another measurement to make it cubic.
It is 4.5 pounds per cubic foot.
Volume = pi*0.652*16 = 21.237 cubic feet to 3 dp
1024 cubic feet.
256*pi cubic feet
50 feet x 16 feet x 4 inches = 266.66 cubic feet.
16/0.75 = 21.33...
The volume is 21.24 cubic feet or 158.86 gallons.
A 6-inch diameter pipe that is 16 feet long has a volume of: 3.14 cubic feet