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UPCAT Mathematics practice question 11: A right triangle has legs measuring 9 cm and 12 cm. What is the length of its hypotenuse?

Correct answer

C. 15 cm

9² + 12² = 81 + 144 = 225, and √225 = 15. This is a 3-4-5 triangle scaled by 3.

A right triangle has legs measuring 9 cm and 12 cm. What is the length of its hypotenuse?

  1. 13 cm
  2. 18 cm
  3. 15 cmCorrect
  4. 21 cm

Why C is correct

9² + 12² = 81 + 144 = 225, and √225 = 15. This is a 3-4-5 triangle scaled by 3.

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