please solve b part answer is 6.4
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the man travels 1.5m east then 2 m south (90 degree) then 4.5 m east.
here total distance towards east is 1.5+4.5= 6m
total distance towards south that is 90 degree from east is 2 m.
so by applying Pythagoras theorem we have height and base of right angle traingle to find displacement just use the theorem.
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