Question

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

    Find the total surface area of the cone.
    A 150 cm² Correct Answer Incorrect Answer
    B 198 cm² Correct Answer Incorrect Answer
    C 250 cm² Correct Answer Incorrect Answer
    D 300 cm² Correct Answer Incorrect Answer

    Solution

    The total surface area of a cone is given by the formula: Total Surface Area = πr(r + l) Where r is the radius and l is the slant height. Substitute the given values: Total Surface Area = (22/7) × 5 × (5 + 13) Total Surface Area = (22/7) × 5 × 18 Total Surface Area = (22/7) × 90 Total Surface Area = 198 cm² Correct Option: b) 198 cm²

    Practice Next

    Relevant for Exams: