



 
Hi Shelia, The best you can do is estimate the amount of topsoil needed. The area is 6 yards by 2 yards and I gather from your last sentence that you have a grid of 2 × 6 = 12 square yards and have estimated the average depth of topsoil needed in each of the 12, 1 square yard plots. Divide each of these 12 depth measurements by 36 to convert it to yards. For each one multiply this depth in yards times the area of the plot (the plots are 1 yd by 1 yd so the area is 1 sq yd) to find the number of cubic yards needed for that plot. Add the 12 results to get the total number of cubic yards needed. Here is an easier way to do the same thing. Add the 12 depths (in inches) you have and divide the sum by 36 to convert it to yards. Multiply by the area of the plot (again this is just 1 cubic yard) to obtain a cubic yard value which is the (estimated) amount of topsoil needed. I hope this helps.  


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