Final answer:
The girl's distance described in this problem is 59 meters.
Step-by-step explanation:
The girl's distance described in this problem can be found by considering the displacements separately and then finding the resultant displacement.
- The girl walks 30 meters north. This is a displacement of +30 meters in the north direction.
- Then, she walks 29 meters south. This is a displacement of -29 meters in the south direction.
To find the girl's total distance, we must consider the magnitudes of the displacements, not their directions. Therefore, we add the magnitudes: 30 + 29 = 59 meters. So, the girl's distance described in this problem is 59 meters.