



 
Hi, You can use our volume calculator to do most of the work. Go to the Quandaries and Queries page on Math Central and follow the link to volume calculator. Select the Boxshaped object and enter the dimensions of the 20 foot container, 5,897 mm, 2,348 mm and 2,285 mm. Read off the volume in cubic meters. I got $33.023 \; m^3.$ Go back to the Volume calculator, select the Boxshaped object and use the area of the top and the dept, input the area of $53,429 \; m^2$ and depth of $10$ cm to obtain $5,342 \; m^3$ which is the volume of stone you need. Thus the number of 20 foot containers you need to order is $\frac{5,342.9}{33.023} = 162.$ You should do this yourself to check on my calculations, Harley  


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