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      Question

      How do you calculate the lateral surface area of a right

      circular cone if its diameter is 12 cm and its height is 8 cm?
      A 84π cm² Correct Answer Incorrect Answer
      B 72π cm² Correct Answer Incorrect Answer
      C 60π cm² Correct Answer Incorrect Answer
      D 90π cm² Correct Answer Incorrect Answer

      Solution

      Radius of the cone = (12/2) = 6 cm So, slant height of the cone = √(82 + 62) = 10 cm So lateral surface area of the cone = π x radius x slant height = 60π cm2 Hence, option c.

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