SOLUTION: if a man walks 4 km east then 5 km south, how far is he from the point where he started?

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Question 329574: if a man walks 4 km east then 5 km south, how far is he from the point where he started?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
He walks two legs of a right triangle.
Use the Pythagorean theorem to calculate the hypotenuse.
H%5E2=4%5E2%2B5%5E2
H%5E2=16%2B25
H%5E2=41
H=sqrt%2841%29 or approximately 6.4 km.