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    Question

    There are two circles that touch each other externally.

    Radius of the first circle with centre O is 12 cm. Radius of the second circle with centre A is 8 cm. Find the length of their common tangent BC.
    A 6тИЪ6 cm Correct Answer Incorrect Answer
    B 8тИЪ3 cm Correct Answer Incorrect Answer
    C 8тИЪ2 cm Correct Answer Incorrect Answer
    D 8тИЪ6 cm Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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