Estimate the Airspeed required to support the Maximum Gross Weight of your selected airplane (from 11. above) at an Altitude of 10000 ft. (As initially indicated, a more detailed table/Excel worksheet is beneficial to precision for this task. To support Weight of any aircraft in level flight, an equal amount of Lift has to be generated - therefore, you can also algebraically develop the lift equation to yield a precise Airspeed result, i.e. substituting L=W and solving for V in the lift equation. Remember that conditions in this question are not at sea level.) The maximum gross weight of the aircraft I selected is 1500 lbs