Physics problems?

Question

1)A girl is delivering newspapers travels three blocks west,four blocks north,then six blocks east. a)What is her resultant displacement? b)What is the total distance she travels?
2)A golfer takes two putts to sink his ball in the hole once he is on the green.The first putt displaces the ball 6.00m east,and the second putt it 5.40m south.What displacement would put the ball in the hall in one putt?

Answer 1

1)
a) √(4^2 + (6 - 3)^2) = 5 blocks
b) 3 + 4 + 6 = 13 blocks

2)
√((6.0)^2 + (5.40)^2) =
√(36 + 29.16) ≈ 8.07 m @ 42.0° E of S

Answer 2

1)
-3+6=3
3^2 + 4^2 = s^2
9 + 16 = s^2
25 = s^2
sqrt = s
sqrt of 25 = 5
s = 5
total distance travelled = 3 + 6 + 4 = 13
2)
6^2 + 5.4^2 = s^2
36 + 29.16 = s^2
65.16 = s^2
sqrt = s
sqrt of 65.16 = 8.07217443
s = 8.07217443