Chetan starts from his office and walks 13 km towards the south. He turns right and walks 12 km, and finally turns right again and walks 8 km. How far is Chetan from the office now?
Correct answer A. 13 km
Explanation
Taking the office as the origin, the final position is 12 km west and 5 km south of it. The shortest distance is the square root of (12² + 5²), which is 13 km.
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