Mensurationmedium · Past Paper
If the surface area of a sphere is S, what is the surface area of a hemisphere of the same radius?
AS/2
B3S/4
C2S/3
DS
✓ Correct Answer: B — 3S/4
Sphere area S = 4πr². Hemisphere TSA = 3πr². Ratio = 3/4. So area = 3S/4.
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