If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10%, then by what percent will its curved surface area change?

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

1.	If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10%, then by what percent will its curved surface area change?
A.	3.5 % decrease
B.	3.5 % increase
C.	5 % increase
D.	5 % decrease
Answer» C. 5 % increase

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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 by what percent will its curved surface area change?

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