Mensurationhard · Past Paper
A capsule-shaped solid has a cylinder with two hemispheres at each end. If the radius is 'r' and the length of the cylindrical part is 'h', what is the total surface area?
A2πrh + 2πr²
B2πrh + 4πr²
Cπrh + 2πr²
D2πrh + πr²
✓ Correct Answer: B — 2πrh + 4πr²
TSA = CSA of cylinder + CSA of two hemispheres = 2πrh + 2*(2πr²) = 2πrh + 4πr².
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