Three acres three inches deep is 403.33 cubic yards.
806.66 Cubic Yards
6 inches = 1/6 yards. So 70 sq yards * 6 inches = 70*1/6 cubic yards = 11.66... cubic yards.
24 cubic feet = 0.89 cubic yards
1.851852 cubic yards
3,456 cubic yd.
806.66 Cubic Yards
You already have a square yard of topsoil, so how does 20 inches of depth get you the volume of topsoil? There are 36 inches in a yard, and you have 20 inches of topsoil depth that's 20/36ths of a yard of topsoil depth. That's 0.555... or about 0.56 yards. The volume of topsoil is 1 yard by 1 yard by 0.56 yards, or about 0.56 cubic yards of topsoil.
62/3 cubic yards for every 1-foot deep. 5 cubic yards for every 9-inches deep. 31/3 cubic yards for every 6-inches deep. 5/9 cubic yard for every 1-inch deep.
6 inches = 1/6 yards. So 70 sq yards * 6 inches = 70*1/6 cubic yards = 11.66... cubic yards.
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
1 acre = 43,560 square feet At 1/2-ft deep, that's (43,560 x 1/2) = 21,780 cubic feet 27 cubic feet = 1 cubic yard 21,780 cubic feet = 806 2/3 cubic yards
24 cubic feet = 0.89 cubic yards
13.1 cubic yards, approx.
1.851852 cubic yards
3,456 cubic yd.
40.1 cubic yards
1 cubic yard will cover 15 square yards at 3 inches deep.