nathanc177 nathanc177

14-12-2018
Mathematics

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What is the surface area of the cylinder?
A.) 9πm²
B.) 18πm²
C.) 21πm²
D.) 13.5πm²

What is the surface area of the cylinderA 9πmB 18πmC 21πmD 135πm class=

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jdoe0001 jdoe0001

14-12-2018

[tex]\bf \textit{surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=1.5\\ h=1.5 \end{cases}\implies SA=2\pi (1.5)(1.5+1.5) \\\\\\ SA=3\pi (3)\implies SA=9\pi[/tex]

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