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    Question

    A cone has a radius of 5 cm and a slant height of 13 cm.

    Find the total surface area of the cone.[Take π = 3.14 ]
    A 150.5 cm² Correct Answer Incorrect Answer
    B 282.6 cm² Correct Answer Incorrect Answer
    C 250.6 cm² Correct Answer Incorrect Answer
    D 300.5 cm² Correct Answer Incorrect Answer

    Solution

    To find the total surface area of a cone, we use the formula: Total Surface Area = πr(r+l) where: r = 5 cm (radius), l = 13 cm (slant height), π = 3.14.

    Total Surface Area = 3.14×5×(5+13) = 3.14×5×18 = 3.14×90 = 282.6 cm² 

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