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    Question

    The curved surface area of a

    right circular cylinder with a radius of 7 cm is 440 cm┬▓. If the height of the cylinder is increased by 50%, what will be its volume?
    A 1310 cm┬│ Correct Answer Incorrect Answer
    B 2310 cm┬│ Correct Answer Incorrect Answer
    C 2300 cm┬│ Correct Answer Incorrect Answer
    D 2520 cm┬│ Correct Answer Incorrect Answer

    Solution

    ATQ, Curved surface area of the cylinder = 2 ├Ч ╧А ├Ч radius ├Ч height = 2 ├Ч (22/7) ├Ч 7 ├Ч height = 440 So, height of the cylinder = 440 ├╖ 44 = 10 cm Increased height of the cylinder = 10 ├Ч 1.5 = 15 cm So, volume of the cylinder = ╧А ├Ч radius2 ├Ч height = (22/7) ├Ч 72 ├Ч 15 = 2310 cm3

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