Lauren and Harvey own a field that is bordered by Route 271, Rogadzo Road, and the Riemann River (Figure 25). To estimate the area of the field, at 50-ft intervals along Route 271 they measured the distance from Route 271 to the river, parallel to Rogadzo Road. Their measurements (in feet) are shown in the figure and in the following table.

Compute right-endpoint and left-endpoint Riemann sums to obtain approximations of the area of the field.

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Measurement Location Along Route 271 (feet from Rogadzo Road): Distance from Route 271 to Riemann River: 0 50 100 150 200 250 300 350 400 260 265 215 205 250 305 295 240 150