A person moved from \( A \) to \( B \) on a circular path as shown is fig.
If the distance travelled by him is 90meters, then the magnitude of displacc 3 ment would be (Given \( \left.\cos 135^{\circ}=-0.7\right) \)
1) \( 42.26 m \)
2) \( 70.46 m \)
3) \( 19.37 m \)
4) \( 40.87 m \)