In a game of lawn chess, where pieces are moved between the
centers of squares that are each 1.00 m on edge, a knight is moved
in  the following  way:  (1)  two squares forward, one square rightward;  (2)  two  squares  leftward,  one  square  forward;  (3)  two
squares forward, one square leftward. What are (a) the magnitude
and (b) the angle (relative to "forward") of the knight's overall displacement for the series of three moves?