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A wooden article is made by mounting a hemisphere on each end of a cylinder. Which faces are NOT counted in the surface area?

Class 10Surface Area of Combined SolidsMensuration
  • Athe two flat circular ends of the cylinder
  • Bthe curved surface of the cylinder
  • Cthe curved surfaces of the hemispheres
  • Dnone; all faces are counted

Step-by-Step Solution

The hemispheres cap the circular ends, so those flat faces are hidden and excluded.
Answer: A) the two flat circular ends of the cylinder

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