dougygamin dougygamin
  • 25-01-2018
  • Mathematics
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A cylinder has a height of 11 inches and radius of 9 inches. Find the surface area of the cylinder in terms of π.

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jdoe0001 jdoe0001
  • 25-01-2018
[tex]\bf \textit{surface area of a cylinder}\\\\ s=2\pi r(h+r)\quad \begin{cases} r=radius\\ h=height\\ ------\\ h=11\\ r=9 \end{cases}\implies s=2\pi (9)(11+9) \\\\\\ s=18\pi (20)\implies s=360\pi [/tex]
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