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      Question

      If the height of equilateral triangle is 12 cm, then

      find out the area of its circumcircle?
      A 32πcm² Correct Answer Incorrect Answer
      B 64πcm² Correct Answer Incorrect Answer
      C 40πcm² Correct Answer Incorrect Answer
      D 60πcm² Correct Answer Incorrect Answer

      Solution

      Height of an equilateral triangle = √3/2  × side  Side = h × 2/√3 = 12 × 2/√3 = 8√3 Radius of circumcircle = side/√3 = (8√3)/√3 = 8 cm Area of circumcircle = πr² = 8²π = 64π

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