- Aunchanged
- B2 times
- C8 times
- D4 times
Step-by-Step Solution
CSA = 2πrh is proportional to when h is fixed, so doubling doubles the CSA. (Area of the ends, π, would become 4 times.)
Answer: B) 2 times
The radius of a cylinder is doubled while its height stays the same. Its curved surface area becomes:
Class 8Surface Area of a CylinderMensuration
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