Starting from a point, Vikram walks 15 m north, turns right and walks 10 m, turns right and walks 7 m, then turns left and walks 5 m. How far is he from the starting point?
A. 17 m
B. 23 m
C. 15 m
D. 13 m
A. 17 m
B. 23 m
C. 15 m
D. 13 m
Best answer
Answer: A. 17 m
Answer: (A) 17 m
North 15 m → (0, 15). Right = east 10 m → (10, 15). Right = south 7 m → (10, 8). Left = east 5 m → (15, 8).
Distance = \(\sqrt{15^2 + 8^2} = \sqrt{289} = 17\) m.
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