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15 February, 09:01

Which set of side lengths form a right triangle?

A 14m, 20m, 25m

B 10cm, 6cm, 8cm

C 7cm, 8cm, 10cm

D 3ft, 6ft, 5 ft

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Answers (1)
  1. 15 February, 09:05
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    If you have a right triangle, you can use the Pythagorean theorem, which is a²+b²=c². (c is the longest side or the hypotenuse)

    You plug in the shorter sides for a and b, then you square root the answer.

    A 14m, 20m, 25m

    14² + 20² = 25²

    196 + 400 = 625

    596 = 625 X

    B 10cm, 6cm, 8cm

    6²+8²=10²

    36+64=100

    100=100 So your answer is B
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