algebra
posted by kathy on .
2. The equation D=1.2 square h gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet.
a. Solve this equation for h.
b. 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.
I have try to solve this problem in different ways and I still don't know how to do it.

d=1.2sqrt h
d^2/1.44= h
b. use the equation d=1.2sqrt(14,255)
about 143 miles 
thank you very much, bobpursley. Now I can do the rest of my work.