If I am understanding the problem statement correctly, then the East and west magnitude would be:
300 - 18 = 282 cm East
The North and South magnitude would be equal 34 cm. Giving us a right triangle with the side lengths given above. We use Pythagorean Theorem to calculate for the third side.
C^2 = 34^2 + 282^2 = 80680
C = 284.04 cm -------> OPTION A
