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Solve an Equation Word Problem

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The formula 1211.1L = CA squared S is used to determine the approach speed for landing an aircraft, where L is the gross weight of the aircraft in pounds, C is the coefficient of lift, S is the surface area of the wings in square feet (ft squared), and A is the approach speed in feet per second. I need help finding A for the Piper Cheyenne, which has a gross weight of 8700 lbs, a coefficient of lift of 2.81, and wing surface area of 200 ft. squared.

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