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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