katiefish05p5lgsw
katiefish05p5lgsw katiefish05p5lgsw
  • 17-07-2018
  • Mathematics
contestada

I think it’s A am I right

I think its A am I right class=

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becchad becchad
  • 17-07-2018

Pi(r)(r)(2) + pi(diameter)(height)

3.14(4)(4)(2)+ 3.14(8)(1.5)

138.16

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jdoe0001 jdoe0001
  • 17-07-2018

[tex] \bf \textit{surface area of a cylinder}\\\\
SA=2\pi r(h+r)~~
\begin{cases}
r=radius\\
h=height\\
------\\
r=\stackrel{mm}{4}\\
h=\stackrel{cm}{1.5}\\
~~~~\stackrel{mm}{15}
\end{cases}\implies SA=2\pi (4)(15+4)
\\\\\\
SA=8\pi (19)\implies SA=152\pi [/tex]

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