155520 sq inch
For a 4-inch depth: 4.75 cubic yards. For a 6-inch depth: 7.1 cubic yards.
3" inch depth covers 108 sq ft so 450 sq ft and 3" depth = 4.5 yard aprx
2.2469 cubic yards for each inch of depth.
77/9 cubic yards for every inch of depth.
For a 4-inch depth you need at least 14.81 cubic yards.
For a 4-inch depth you will need 7.41 cubic yards.
3.7
Almost exactly 2.00 cubic yards for every inch of topsoil depth.
If your pour to a standard 4-inch depth, you will need 3.54 Cubic Yards.
For a 4-inch depth you will need at least 7 cubic yards.
At least 28.5 cubic yards for a 6-inch depth.
If you use a standard 4-inch depth, you will need at least 8.9 cubic yards.