D = 1.2 square root h horizon in miles D
from a height h 12000 feet in elevation how far are you from the horizon?
use correct mathematical symbols and explaining thoughtly in words each step.
No much to do except plugging in the given value
D = 1.2√120000
= 1.2(109.54...)
= appr 131.45
From an elevation of 12000 ft, you could see appr 131.45 miles