An observation deck near the top of Willis towers (formerly known as Sears tower) in Chicago is 1353 ft high. How far can a tourist see to the horizon from this

Question

How far can you see to the horizon from a given height? the function D=1.2√h   can be used to approximate the distance d, in miles, that a person can see to the horizon from a height h, in feet. 

 

An observation deck near the top of Willis towers (formerly known as Sears tower) in Chicago is 1353 ft high. How far can a tourist see to the horizon from this deck?

Answer 1

d = 1.2 √1353

d ≈ 1.2 (36.78)

d ≈ 44.14