If the height of a cylinder is increased by 15% and the radius of its base is de

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If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10% then the percentage change in its curved surface area is :

Options:

A . 2.5% increased

B . 3.5% increased

C . 2.5% decreased

D . 3.5% decreased

Answer: Option B

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