A person walks 2$\sqrt{2}$units away from origin in south west direction to reach A, then walks $\sqrt{2}$ units in south east (S45°E) direction to reach B. From B he travels 4 units horizontally towards east to reach C, then he travels along a circular path with centre at origin through an angle of $\frac{2\mathrm{\pi }}{3}$ in anti clockwise direction to reach his destination D.