A right-angled triangle has a hypotenuse of 13 cm and one shorter side of 5 cm. What is the length of the other short side?

Answer and explanation

Correct answer: C. 12 cm

  1. Step 1: Use Pythagoras: .
  2. Step 2: .
Answer
12 cm.
Why not the others: 8 cm is 13 - 5, 18 cm is 13 + 5 and 144 cm forgets to take the square root.

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