it depends how thickly you lay it.
about 71 cubic metres of gravel i think
Gravel is bought in cubic quantities, or by weight. You ask "to fill" but you only give a square measure. The volume of gravel required wil depends on the depth you wish the gravel to be. To fill 81 square metres to a depth of 5 cm would require 4.05 cubic metres of material.
16 cubic yards
218.75 cubic feet or 8.1 cubic yards
You will need about 65.185 cubic yards (83.6 tons) of gravel for this area.
about 71 cubic metres of gravel i think
Gravel is bought in cubic quantities, or by weight. You ask "to fill" but you only give a square measure. The volume of gravel required wil depends on the depth you wish the gravel to be. To fill 81 square metres to a depth of 5 cm would require 4.05 cubic metres of material.
16 cubic yards
218.75 cubic feet or 8.1 cubic yards
A: One cubic foot. That would be 0.037 cubic yard (rounded)
You will need about 65.185 cubic yards (83.6 tons) of gravel for this area.
You will need about 463 cubic yards (around 594 tons) of gravel for this area.
It depends how deep you go. If you do 2 inches deep the area will require at least 0.7 cubic yards (about 1,710 pounds) of gravel.
If you use a depth of 3 inches, that area will be about 16.2 cubic yards (around 20.785 tons) of gravel.
The answer will depend on the depth to which the gravel is to be spread.
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.
You will need 0.309 cubic yards (about 600 pounds) of gravel.