Answer:

Step-by-step explanation:

9514 1404 393
Explanation:
Your different answers came about as a result of an error you made in the Pythagorean theorem calculation.
√(100 +100) = √200 = 14.142 . . . . same as vector calculation
It would be 123,456,789 (if not counting decimals)
decimals would be like 0.123456789