Estimate the volume of an excavated pile of material in cubic yards.
If you look at the second image, the footprint, length A is not the overall length.
If you subtract that from the total length and add both ends, you end up with a cone that has a diameter that is equal to length B.
V = 1/3 * π * R² * H V = the volume in cubic feet π = 3.14159265 R = length B divided by 2 H = HeightThe volume of the center prism:
0.5 * A * B * H V = the volume in cubic feet A = length A B = length B H = heightThe two results are added together for a cubic foot value and converted to cubic yards by dividing the cubic feet by 27.