Question

What is the maximum broadcasting from a radio tower 1800 feet tall( approximately 0.34 mile)? The radius of Earth is approximately 3960 miles, and you can assume the ground around the tower is nearly flat. Round your answer to the nearest 10 miles.

Answer 1

Draw a diagram ,and it's clear that the distance d to the horizon from height h obeys:

d^2 + r^2 = (r+h)^2

That should help

Answer 2

50 miles