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    Question

    An iron pillar consists of two parts: one in the shape

    of a right circular cylinder and the other in the shape of a right circular cone. The radius of both the cylinder and the cone is 28 cm. The height of the cylindrical part is 14 cm, which is twice the height of the conical part. What is the volume of the iron pillar?
    A 50024 cm³ Correct Answer Incorrect Answer
    B 15204 cm³ Correct Answer Incorrect Answer
    C 35204 cm³ Correct Answer Incorrect Answer
    D 40245.33 cm³ Correct Answer Incorrect Answer
    E 25004 cm³ Correct Answer Incorrect Answer

    Solution

    Volume of the cylinder part =22/7*28*28*14 = 34496 cm³ Volume of the cone part =(22/7*28*28*7)/3 = 5749.33 cm³ So total volume of the iron pillar Is = 34496 + 5749.33 = 40245.33 cm³

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