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Rahul travelled 14 km Southward then turned right and travelled 12 km, then again turned right and travelled 19 km. How far was Rahul from the starting point ?

Solution

Correct Option: 4

Rahul goes 14 km South, then right (West) 12 km, then right (North) 19 km. Net North-South: 19-14=5 km North. Net East-West: 12 km West. Distance =52+122=25+144=169=13=\sqrt{5^2+12^2}=\sqrt{25+144}=\sqrt{169}=13 km.

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