In a right-angled triangle, if the two shorter sides (legs) measure 9 cm and 12 cm, what is the length of the hypotenuse?

✓ Correct Answer: Option C

Using the Pythagorean theorem, a² + b² = c². So, 9² + 12² = c². 81 + 144 = 225. Thus, c = √225 = 15 cm.