10' X 11' X 3" X (1'/12") = 27.5 cubic feet
27.5 cubic feet X (1 cubic yard / 27 cubic feet) = 1.02 cubic yards
85.8 cubic meters = 112.22 cubic yards
At 4" thick you would need at least 7.04 cubic yards. At 6" thick you'll need at least 10.56 cubic yards. If the slab is 2" thick, you'll need 3.52cubic yards.
1,050 cubic feet equals 38.89 cubic yards.
... cubic square what? Meters? Yards? equals in cubic feet?
240 cubic feet = about 8.9 cubic yards. (8.88888889 cubic yards).
10.67 Cubic Yards
47.55 cubic yards . 4" would be 5.23 cubic yards.
You will need a minimum of 74.1 cubic yards.
1,000 cubic yards.
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
6.94 Cubic Yards
3.6 cubic yards will be enough.