<PRE><B>Question 169769</B>
An airplane is 12,000 ft horizontally from the airport. The slanted distance to the airport is 13,000 ft. what is the plane’s altitude?
------------------
13000 is the hypotenuse of a right triangle, and 12000 is one leg.
The altitude = {{{sqrt(13000^2 - 12000^2)}}}
={{{1000sqrt(13^2 - 12^2)}}}
={{{1000sqrt(169 - 144)}}}
={{{1000sqrt(25)}}}
=1000*5
= 5000 feet



</PRE>