9.72 Cubic Yards of Concrete is required, if you are going to order by cement truck.
874.8 bags of 40# (40 lbs) bags, or
583.2 bags of 60#
437.4 bags of 80#
Three acres three inches deep is 403.33 cubic yards.
6 inches = 1/6 yards. So 70 sq yards * 6 inches = 70*1/6 cubic yards = 11.66... cubic yards.
2.2222222 cu. yards
.617 Yards
259.2593 sq. yards.
That depends on how DEEP you want the concrete !
2.2 Yards
1.77 cubic yards
16.05
Three acres three inches deep is 403.33 cubic yards.
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
6 inches = 1/6 yards. So 70 sq yards * 6 inches = 70*1/6 cubic yards = 11.66... cubic yards.
40.1 cubic yards
2.2222222 cu. yards
You would need 31.88 cubic yards of topsoil to cover 855 sq feet at 6 inches deep.
.617 Yards
259.2593 sq. yards.