The projection of a vector vec(r ) = 3 hat(i) + hat(j ) + 2 hat(k) on the x-y plane has magnitude

The projection of a vector vec(r ) = 3 hat(i) + hat(j ) + 2 hat(k) on

1.	The projection of a vector vec(r ) = 3 hat(i) + hat(j ) + 2 hat(k) on the x-y plane has magnitude
Answer» 3 4 `SQRT14` `SQRT10` ANSWER :D