A person walks 4 m from point A towards east to reach point B and he turns to his right and walks 5 m to reach point C. Again he turns to his left and walks 12 m to reach point D and finally he turns to his left and walks 5 m to reach point E. What is the shortest distance between point B and point D?
Shortest distance between B and D = √5² + 12² = √25 + 144 = √169 = 13 m.
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