SOLUTION: A man starts from point A to get to point B. The road makes the man travel 3 kilometres due north first, then 8 kilometres miles due east and further 3 kilometres due north to reac

Question 1069749: A man starts from point A to get to point B. The road makes the man travel 3 kilometres due north first, then 8 kilometres miles due east and further 3 kilometres due north to reach point B. If the man could have gone �as the crow flies�, how much less of a distance would he have to travel?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let east be positive x, north positive y.
Starting at (0,0).
(0,0)+(0,3)=(0,3)
(0,3)+(8,0)=(8,3)
(8,3)+(0,3)=(8,6)
So he traveled a total of

Use the distance formula,

So he could save 4 km.

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