Question

    The height of a cylinder is 20 cm. The lateral surface

    area is 1760 cm². Its volume is:
    A 12032 cm³ Correct Answer Incorrect Answer
    B 12302 cm³ Correct Answer Incorrect Answer
    C 12203 cm³ Correct Answer Incorrect Answer
    D 12320 cm³ Correct Answer Incorrect Answer

    Solution

    Height (h) = 20 cm Lateral Surface Area = 1760 cm² 2πrh = 1760 ⟹ 40πr = 1760 ⟹ r = 1760/125.6  ≈  14 cm Volume = πr2h = π × ( 14 ) 2 × 20 = π × 3920 ≈  12320 cm³

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