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    Question

    The surface area of a sphere is 154 cm┬▓. Find its

    volume.
    A 157.5 cm┬│ Correct Answer Incorrect Answer
    B 179.66 cm┬│ Correct Answer Incorrect Answer
    C 261.33 cm┬│ Correct Answer Incorrect Answer
    D 215 cm┬│ Correct Answer Incorrect Answer

    Solution

    Surface area A = 4╧Аr┬▓ = 154. Solving for r: r┬▓ = 154/(4╧А) => r = тИЪ(154/(4╧А)). r = 7/2 cm Now, the volume V = (4/3)╧Аr┬│. = 4/3 * 22/7 * 7/2 * 7/2 * 7/2 = 179.66 V тЙИ 179.66 cm┬│. Correct answer : b) 179.66 cm┬│

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