The answer will depend on the depth to which the gravel is to be spread.
You will need 0.309 cubic yards (about 600 pounds) of gravel.
You will need 20 cubic yards or 25.7 tons of gravel.
486 cubic feet
That depends on how deep you want to spread it. On that area, it takes 0.463 cubic yards for every inch deep.
that is 333 cubic feet,or 12.3 cubic yards At 100 pounds per cubic foot,that is over 33,000 pounds of gravel
You will need 65.93 cubic yards or 84.6 tons of gravel.
Approximately 24.7 cubic yards or 31.7 tons of gravel.
You cannot make a direct conversion. You need to specify how deep you want the gravel to be in your area that needs covering.
It would depend on how thick you want to spread it.
You will need about 3.7 cubic yards (around 4.75 tons) of gravel.
5.55 cubic yards of gravel