



 
Hi Robert, Your shoulder is 1.2 m wide and the grade is to be 6% so if x is as in the diagram then x/1.2 = 0.06.
Thus x = 1.2 0.06 = 0.072 m or 0.072 100 = 7.2 cm. Since there are 2.54 cm in an inch this is
I hope this helps,  


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