Your friend's house is 5 miles south and 12 miles west of the zoo. How far is your friend's house from the zoo?
if we were to find the shortest distance, use the pythagorean thereom!
if you don't know what that is, it's a^2(short leg)+b^2(long leg) = c^2(hypotenuse) in a right triangle
Put into this question it's Sqrt(5^2+12^2) = sqrt(169) =_____(You know how to do this!)