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      Question

      A triangle has all three sides of length 18 cm. Determine

      the circumradius of this triangle.
      A 5√2 Correct Answer Incorrect Answer
      B 6√3 Correct Answer Incorrect Answer
      C 12√3 Correct Answer Incorrect Answer
      D 18√3 Correct Answer Incorrect Answer

      Solution

      ATQ;
      Since all three sides are equal, the given triangle is an equilateral triangle.

      For an equilateral triangle, the circumradius is calculated as:
      Image
      Where a = 18 cm
      Image

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