Find the total surface area of a hemisphere of radius
7 cm. (Take it to be 3.142.)
answer please
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Answer:
462
Step-by-step explanation:
GIVEN,
RADIUS = 7CM
TOTAL SURFACE AREA OF SOLID HEMISPHERE =
\begin{gathered} = 3\pi {r}^{2} \\ = 3\pi {7 }^{2} \\ = 3 \times \frac{22}{7 } \times 49 \\ = 3 \times 22 \times 7 \\ = 462\end{gathered}
=3πr
2
=3π7
2
=3×
7
22
×49
=3×22×7
=462
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