2) a possible way in which the book may have got 6.02 km .. is that
" The car moved 2 km towards east ,made a perpendicular left turn,ran for 500 m,made a perpendicular right turn ,ran for 4km & stopped."Find the displacement of the car.
instead of 500 km.
1) draw a fig. (it gives the answer as well)
if u have trouble drawing fig. then ask