chrissteward106 chrissteward106
  • 23-03-2019
  • Mathematics
contestada

Find the surface area of a cylinder that has a raius of 13.5 cm., and a height of 90 cm. Show all work without using a calculator.

Respuesta :

jdoe0001 jdoe0001
  • 23-03-2019

[tex]\bf \textit{surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=13.5\\ h=90 \end{cases}\implies SA=2\pi (13.5)(90+13.5) \\\\\\ SA=27\pi (103.5)\implies SA=2794.5\pi \implies SA\approx 8779.18[/tex]

well, the last part will be with a calculator, but you can simply use the area in π terms.

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