Montana Right-Of-Way Certification Practice Exam

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Which option best describes the complete calibration workflow in order?

Find swath width; mark a 200 ft course; multiply swath by 200 ft; divide by 43,560; collect gallons sprayed; compute GPA.

Mark a 200 ft course; find swath width; multiply swath by 200 ft; collect gallons sprayed; compute GPA; divide by 43,560.

Collect gallons sprayed; find swath width; mark a 200 ft course; multiply swath by 200 ft; divide by 43,560.

Find swath width; mark a 200 ft course to verify speed; multiply swath by 200 ft to get strip area in square feet; divide by 43,560 to get acres; collect gallons sprayed; compute GPA.

Calibration is about linking what you spray to the area you cover so you know how many gallons per acre you’re applying. The correct workflow starts by finding the spray swath width and then using a measured 200-foot course to verify your ground speed. Knowing both width and speed lets you determine the strip area you’ll spray: area in square feet equals swath width times the distance (200 ft). Converting that strip area to acres (divide square feet by 43,560) gives the area basis for the GPA calculation. Next, you spray and record how many gallons were used, and finally you compute gallons per acre by dividing the gallons sprayed by the acres covered. This order ensures the area is accurately defined under actual speed and nozzle settings before relating it to the amount of product used. Skipping the speed verification or the area conversion step would make the GPA unreliable.