Problema Solution
A Pilot is instructed to descend from 30,000ft. to 20,000ft. over a horizontal distance of 50,000 ft. What distance will the plane travel during this distance?
Answer provided by our tutors

Using the Pythagorean Theorem we have:
d^2 = 50,000^2 + (30,000 - 20,000)^2
d^2 = 10^8*24
d^2 = 48,989.80 ft approximately
The plane will travel approximately 48,989.80 ft.