A girl delivering newspapers travels 4 blocks

Question

west, 6 blocks north, then 6 blocks east.
What is the magnitude of her resultant displacement?
Answer in units of blocks.

Answer 1

D = -4 + 6i + 6 = 2 + 6i.
D^2 = 2^2 + 6^2 = 40, d = 6.32 Blocks.