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    Question

    The lateral area is thrice as big as the base area of a

    solid cone. If the diameter of the solid cone is 1 meter, then what is the total surface area of solid cone?
    A 8╧А Sq. m. Correct Answer Incorrect Answer
    B 2╧А Sq. m. Correct Answer Incorrect Answer
    C ╧А Sq. m Correct Answer Incorrect Answer
    D 4╧А Sq. m. Correct Answer Incorrect Answer

    Solution

    Diameter of the cone is 1 meter тЗТ Radius of the cone (r) = 1/2 meter Area of the base of the cone = ╧А(1/2)2 = ╧А/4 Sq. m. The lateral area is thrice as big as the base area тЗТ Lateral area of the cone is 3╧А/4 Sq. m. Total surface area of the cone = ╧А/4 + 3╧А/4 тЗТ ╧А Sq. m. тИ┤ The total surface area of the solid cone is ╧А Sq. m.

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