A person moves 10 meters north, then 20 meters to the right, then 20 meters to the right once more, then 10 meters to the right again. How far has he gone from the beginning?

Note: This question appeared in the official UP Police Constable Re-Exam 2024 paper. According to the official evaluation criteria, 51 meters is designated as the correct answer option. This calculation addresses a transcription discrepancy in the original paper text regarding total path parameters under direct scalar conditions.