Answer:
24, 000 feet
Step-by-step explanation:
If plane 1 is flying at 11,000 feet and plane 2 is flying at 35, 000 feet from the ground which is a common reference point for both planes, the the formula for calculating how far the planes are would be:
Distance between planes= (Elevation of Plane 2-Elevation of Plane 1 )
(350000-11000)= 24,000 feet
This means that Plane 2 is 24,000 feet above Plane 1
