X walks 3 km towards west, and then turns and travels 4 km towards north. The shortest distance between the start and the end point of X’s journey is ..........
X walks 3 km towards west, and then turns and travels 4 km towards north.
According to Phythagoras theorem,
Shortest path = $$\sqrt{4^{2}+3^{2}}$$
= 5
Option B is correct
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