If a person walks 6 m from point P towards east to reach point Q and he turns to his right and walks 8 m to reach point R. Again he turns to his left and walks 15 m to reach point S and finally he turns to his left and walks 8 m to reach point T. What is the shortest distance between point Q and point S?
Shortest distance between Q and S = √8² + 15² = √64 + 225 = √289 = 17 m.
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