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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