math
posted by
Tracy on
.
Find the distance to the horizon @ 32,000 feet.

math 
Steve,
assuming you mean on the earth, not some other planet or polyhedral body,
If d is the distance, and r is the radius of the earth (in feet),
r^2 + d^2 = (r+32000)^2

math 
Anna,
If d is the distance, and r is the radius of the earth (in feet),
r^2 + d^2 = (r+32000)^2