SOLUTION: An air traffic control towel at an airport located in flat dessert terrain, the controller can see to the horizon. The distance d in miles that he can see from a height above gro

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Question 285924: An air traffic control towel at an airport located in flat dessert terrain, the controller can see to the horizon. The distance d in miles that he can see from a height above ground level h (in feet) is given by the following equation. How high must the controller be to see 20 miles to the horizon? Round to the nearest foot.
d=square root of 1.5h

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
d=square root of 1.5h
20=sqrt(1.5h) square both sides.
400=1.5h
h=400/1.5
h=267 ft. is the height of the tower.