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      Question

      What will be circumradius of a right angle triangle

      whose base is 9 cm & height is 40 cm ?
      A 18.5 cm Correct Answer Incorrect Answer
      B 20.5 cm Correct Answer Incorrect Answer
      C 30.5 cm Correct Answer Incorrect Answer
      D 26.5 cm Correct Answer Incorrect Answer

      Solution

      By pythogorus theorem, Hypotenuse 2 = Base 2  +Height 2 = 92 + 402 = 81 + 1600 = 1681, So Hypotenuse = 41 cm  Now circumradius of a right angle triangle = Hypotenuse/2 = 41/2 = 20.5cm

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