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Hemisphere and Its Surface Area

Find the CSA ...

Question

Find the CSA and TSA of a solid hemisphere of radius $14$ cm.

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Solution

CSA of a hemisphere $= 2 π r^{2} = 2 \times \frac{22}{7} \times 14 \times 14 c m^{2}$
CSA of the hemisphere $= 1232 c m^{2}$
TSA of a hemisphere $3 π r^{2} = 3 \times \frac{22}{7} \times 14 \times 14 c m^{2}$
TSA of a hemisphere $= 1848 c m^{2}$ .

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