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    Question

    The length of the each side of an equilateral triangle

    is 28тИЪ3 cm . The area of circumcircle, (cm 2 ) is
    A 616 cm┬▓ Correct Answer Incorrect Answer
    B 2464 cm┬▓ Correct Answer Incorrect Answer
    C 3850 cm┬▓ Correct Answer Incorrect Answer
    D 5544 cm┬▓ Correct Answer Incorrect Answer

    Solution

    Area of circumcircle of a тИЖ = ╧АR 2 ┬а =╧А(a/тИЪ3) 2 ┬а = ╧А(28тИЪ3/тИЪ3) 2 ┬а┬а =╧А ├Ч 282 ┬а = 22/7 ├Ч 28 ├Ч 28 = 2464 cm 2 ┬а

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