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Both the radius and the height of a closed cylinder are doubled. Its total surface area becomes:

Class 8Surface Area of a CylinderMensuration
  • A8 times
  • B2 times
  • C6 times
  • D4 times

Step-by-Step Solution

New TSA = 2ππ. Areas scale by when every length doubles (volume would be 8 times).
Answer: D) 4 times

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