A right triangle has legs of length and . What is the length of its hypotenuse?

Answer and explanation

Correct answer: D. 15

  1. Step 1: Apply the Pythagorean theorem for a right triangle with legs and : .
  2. Step 2: Compute the sum of squares of both perpendicular legs: .
  3. Step 3: Take the positive square root to find the length of the hypotenuse: .
Answer
15.

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