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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 6√6 cm Correct Answer Incorrect Answer
      B 8√3 cm Correct Answer Incorrect Answer
      C 8√2 cm Correct Answer Incorrect Answer
      D 8√6 cm Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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