For the data of Problem 26.19, calculate slope intercepts and determine the end area by the coordinate method.
Problem 26.19:
From the following excerpt of field notes, plot the cross section on graph paper and superimpose on it a design template for a 40-ft-wide level roadbed with cut slopes of 3:1 and a subgrade elevation of 1239.50 ft. Determine the end area graphically by counting squares.
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