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    Question

    The capacity of a cylinder tank is 8316 cm3 .

    If the radius of its base is 21 cm, then find the depth of the tank.
    A 4 cm Correct Answer Incorrect Answer
    B 8 cm Correct Answer Incorrect Answer
    C 10 cm Correct Answer Incorrect Answer
    D 6 cm Correct Answer Incorrect Answer

    Solution

    ATQ,

    V = πr²h = (22/7) × 21² × h = (22/7) × 441 × h = 1386h 8316 = 1386h ⇒ h = 8316 ÷ 1386 = 6 cm

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