Question 126

From point P. a man rides a cycle 9 km towards East. Then, he rides the cycle 2 km towards North. From there, he rides the cycle 3 km towards East. Finally he rides the cycle 3 km towards North to a point Q. Then the distance between the points P and Q is (in km)

Solution

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Consider P at the origin (0,0)
Then Q is located at (12,6) 

Hence, distance between P and Q = $$\sqrt{\ \left(12-0\right)^2+\left(6-0\right)^2}$$ = 13

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