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    Question

    Find the total surface area (in m²) of a cone, if its

    slant height is 32 m and the diameter of its base is 48 m. [Use π = 22/7]
    A 12077(4/7) Correct Answer Incorrect Answer
    B 4424 Correct Answer Incorrect Answer
    C 4224 Correct Answer Incorrect Answer
    D 12067(4/7) Correct Answer Incorrect Answer

    Solution

    According to the question Radius of the cone = 48/2 = 24 m The slant height of the cone = 32 m   Now, Total surface area of cone = πrl + πr² = (22/7 x 24 x 32) + (22/7 x 24 x 24) = (16,896/7 + 12,672/7) = 29,568/7 = 4224 m²   The total surface area of a cone is 4224 m².

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