Help with radicals.

[HotelPaper]

I've gotten this far with this problem.

D^2/144 = h for D=1.2 sqrt of h.

So D^2/144 = h.

Now the second part is:
"Long’s Peak in Rocky Mountain National Park, is 14,255 feet in elevation. How far can you see to the horizon from the top of Long’s Peak? Can you see Cheyenne, Wyoming (about 89 miles away)? Explain your answer."

So would it be D^2/144 = 14,255? If that's the case can someone walk me through solving this?

 

[Denis]

Post the 1st part of the problem IN FULL.

 

[HotelPaper]

"The equation D=1.2 sqrt of h gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet."

 

[Denis]

"The equation D=1.2 sqrt of h gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet."

Well, if h = 14255, then D = 1.2 times sqrt(14255) = 143.27, or 143 miles rounded.
Why are you complicating it?