) In a cylinder, the radius is doubled and height is halved, the curved surface area will be
A. Halved
B. Doubled
C. Same
D. Four times
Answer:C
) In a cylinder, the radius is doubled and height is halved, the curved surface area will be
A. Halved B. Doubled C. Same D. Four times
Explanation: We know that the curved surface area of a cylinder is 2πrh