To swim from one corner to the opposite corner of a rectangular pool, you would essentially swim the diagonal of the rectangle. You can calculate the length of the diagonal using the Pythagorean theorem:
Diagonal = √(length² + width²)
For the given pool:
Diagonal = √(50² + 25²)
Diagonal = √(2500 + 625)
Diagonal = √3125
Diagonal ≈ 55.9 meters
So, you would swim approximately 55.9 meters from one corner to the other.