Question

Find TSA of hemispher of radius 7cm.

Answer 1

Dear Student,

$$\begin{gathered} TSA\hspace{0.17em}ofhemisphere=3{\mathrm{\pi r}}^2 \\ \mathrm{Given}:\hspace{0.17em}\mathrm{radius}=7\mathrm{cm} \\ \mathrm{So},\mathrm{TSA}\hspace{0.17em}\mathrm{of}\mathrm{hemisphere}=3\times \frac{22}{7}\times 7\times 7 \\ \mathrm{TSA}\hspace{0.17em}\mathrm{of}\mathrm{hemisphere}=462{\mathrm{cm}}^2 \end{gathered}$$

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