Question

please find the magnitude and direction of displacement of the object

Answer 1

displacement=0
as the object returns to the same spot, and displacement is the shortest path between the starting point and end point, here both are 'A'.

hope it helped:)

Answer 2

Displacement would be 0 as it came back to the place it started , point a
Distance = 2pie r
r = 3.5 km or 3.5 square
therefore distance = 2 ×3.5×22/7
= 2×0.5×22
=22km