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28 February, 14:17

Which set of three numbers could represent the lengths of the sides of a right triangle?

A.

7, 24, 25

B.

8, 9, 10

C.

9, 11, 14

D.

15, 18, 21

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Answers (1)
  1. 28 February, 16:58
    0
    All you have to do is use the Pythagorean theorem (a² + b² = c²) on all of them. Since, the hypotenuse is always the longest side, use the biggest number for c.

    A: 7² + 24² = 25²

    49 + 576 = 625

    625 = 625

    Luckily, the answer is A.
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