At 100 pounds per cubic foot, that is 20 cubic feet per ton = 0.57 cubic meters
Perhaps you mean cubic feet. In that case it would be about 30 cubic feet.
One ton of granite is equivalent to approximately 36 cubic feet.
about 6 cubic feet
It varies with the soil. A cubic ft of compacted dirt weighs 100-120 lbs. Somewhere between 17 and 20 cubic ft to a ton. A cubic yard is about a ton and a half.
I
The volume of soil in a metric ton can vary greatly depending on the composition and density of the soil. On average, 1 metric ton of soil may occupy around 0.7 to 1.2 cubic meters.
2.13 ton of what? Ton is a unit of mass, and cubic feet is volume. So you would need to know the density of the material, in order to determine volume from mass.
5 cubic feet
About 50
Knowing that 1 cubic foot is pretty much equal to 100 pounds or 0.05 ton, 1 ton of gravel is around 20 cubic feet.
There is about 2800lbs in 2 yards of top soil.
One ton of coal is approximately equal to 40 cubic feet. Therefore, three tons of coal would require around 120 cubic feet of storage space.