Question

Find the total surface area of a hemisphere of radius
7 cm. (Take it to be 3.142.)
answer please ​

Answer 1

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