Alex walks 1 mile towards East and then he turns towards South and walks further 5 miles. After that he turns East and walks 2 miles further. Finally he turns to his North and walks 9 miles. How far is he from the starting point?
Explanation:
From the figure, the final position is E and the starting point is D.
Distance DT = Distance DF + Distance FT
= Distance DF + Distance HP
= 1 + 2
= 3 miles.
Distance ET = DistanceEP – Distance TP
= Distance EP – Distance FH
= 9 – 5
= 4 miles
From the figure, the distance between starting point and the end point is
(DE)2 = 32 + 42
= 9 + 16
= 25
DE = 5 miles
Hence, option (c).
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