Question

If you are looking at the horizon, you can determine the distance you are from the horizon in miles, D, from a height, h, in feet by the equation of D = . If you are standing on a mountain top that is 12,000 feet in elevation, how far are you from the horizon?

Answer 1

You did not state the equation that you should use.

Since you are not using metric units, I would have to look up the non-metric formula.
I will let you do that.