alleryA cylinder capped by two hemispheres has area equal to the sum of?
ASide and two hemispheres
BThe cylinder side alone
CThe two hemispheres alone
DSide and two flat ends
Answer & Solution
Correct answer: A. Side and two hemispheres
1. Joining hemispheres to the ends hides the flat circular ends.
2. Only the curved surfaces remain on the outside.
3. So add the cylinder's curved area and both hemispheres' curved areas.
_Source: NCERT Class 8 Mathematics (and Class 10 Surface Areas and Volumes), Surface Area of a Combination of Solids_
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