Question: In a right triangle, if one leg is 3 units and the hypotenuse is 5 units, what is the length of the other leg?

Options:

1. 2 units
2. 4 units
3. 6 units
4. 8 units

Correct Answer: 2 units

Solution:

Using the Pythagorean theorem, a² + b² = c², we have 3² + b² = 5², which gives b² = 25 - 9 = 16, so b = 4 units.