The path is rectangular and so the two friends are standing in two corners so the shortest distance to travel to meet each other will be a diagonal of the rectangle .
So the length and breadth are 120 m and 50 m respectively,
According to the Pythagoras theorem : -
Hypotenuse² = L²+B²
⇒ H² = 14400+2500
⇒ H² = 16900
H = 130 m
Hence , the shortest distance is 13 m.
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