Question 1061391: A person walks 12km due north , then 15km due east , after that 19km due west and then 15km due south . How far is he from starting point ?
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
A person walks 12km due north , then 15km due east , after that 19km due west and then 15km due south .
How far is he from starting point ?
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If he started at (0,0), then his way was
(0,0) ---> (0,12) ---> (15,12) ---> (-4,12) ---> (-4,-3).
Now, the distance from (0,0) to (-4,-3) is 5.
Answer. He is in 5 km from the starting point.
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