That depends on how deep you want the top soil! 5' X 8' = 40 square feet. If you want it 1' deep you would need 40 Cubic Feet, 3" deep you would need 10 cubic feet of top soil.
You need to specify how thick you want the top soil to be
You would need about 1 cubic yard of topsoil to cover a 200 square foot area with 1 inch of soil.
For an area that is 20ft by 20ft and you want to add 6 inches of topsoil, you will need 20 cubic yards of topsoil. Topsoil is typically ordered by the cubic yard, so this measurement will ensure that you have enough to cover the entire area with a 6-inch layer.
The answer depends on the depth to which you wish to cover it.
For a 60cm depth of topsoil, you would need 0.6 cubic meters (or approximately 0.78 cubic yards) of topsoil. This calculation is based on the formula: Volume = Area × Depth.
To grow grass effectively, you typically need about 6 to 8 inches of topsoil.
To level a lawn, you typically need about 1-2 inches of topsoil.
Insufficient information.You need to know the depth of topsoil you want to cover those 7550 sq ft.By "yards" I assume you mean cubic yards -- a volume measurement.
You would need 31.88 cubic yards of topsoil to cover 855 sq feet at 6 inches deep.
How much cement is needed to cover 192 square feet of area
Niether; It's surface area.
It depends how much you need.