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olya-2409 [2.1K]
3 years ago
10

Find the surface area of the cylinder.

Mathematics
1 answer:
timofeeve [1]3 years ago
4 0
\bf \textit{surface area of a cylinder}\\\\
SA=2\pi r(h+r)~~
\begin{cases}
r=3.5\\
h=12
\end{cases}\implies SA=2\pi (3.5)(12+3.5)
\\\\\\
SA=7\pi (15.5)\implies SA=108.5\pi
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