Question

Boy Scout camp and walk 6 km due east he then turns and walks 9 km due south what is his distance away from the camp at this point

Answer 1

You are going to use the Pythagorean there on as the two directions make a 90 degree angle.
A^2+B^2=C^2
6^2+9^2=C^2
36+81=C^2
117=C^2
Square root both sides
C=10.82km