In her underground lair, Bellatrix has captured three heroes and chained them to the floor. The length of the rectangular pool is \(50\) m and the width of the pool is \(30\) m.

As she waves her wand and adds \( 5000 \text{ m}^3 \) of water to the pool, Bellatrix hears a loud noise and runs to the next room. How many of the heroes are completely underwater?

- Hermione is 1.65 meters tall
- Harry is 1.68 meters tall
- Ron is 1.75 meters tall

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