Traditional Culture Encyclopedia - Travel guide - During the holiday, Xiao Ming and his classmates went to an island to explore treasures. According to the treasure map, after landing, they walked 8 kilometers east and 2 kilometers north.
During the holiday, Xiao Ming and his classmates went to an island to explore treasures. According to the treasure map, after landing, they walked 8 kilometers east and 2 kilometers north.
Passing through point B is BC⊥AC, and AC and BC meet at point C.
∴∠ACB=90，
As can be seen from the figure, AC=(8-3+ 1) km =6 km, BC=(2+6) km =8 km,
In Rt△ABC, AC = 6km, BC = 8km,
According to Pythagorean theorem AB=AC2+BC2= 10 km,
So the answer is 10.
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