How many cubic yards of topsoil will you need for one acre land at 4 inches deep?

To determine the amount of topsoil needed for one acre at a depth of 4 inches, first convert the depth from inches to feet: 4 inches is 1/3 of a foot. There are 43,560 square feet in an acre, so the volume in cubic feet is 43,560 sq ft * (1/3 ft) = 14,520 cubic feet. Since there are 27 cubic feet in a cubic yard, divide by 27 to find the volume in cubic yards: 14,520 / 27 ≈ 538.89 cubic yards. Therefore, you will need approximately 539 cubic yards of topsoil.