zxc0970142355
zxc0970142355 zxc0970142355
  • 19-03-2016
  • Mathematics
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The lateral area of a cone is 198.6 cm2. The diameter of the cone is 10.2 cm. Determine the height of the cone to the nearest tenth of a centimetre.

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zexius
zexius zexius
  • 19-03-2016
[tex]h= \frac{\sqrt{( \frac{A_{L} }{r})^{2} - ( \pi r)^{2}}}{ \pi } = \frac{\sqrt{( \frac{198.6 }{5.1})^{2} - ( \pi 5.1)^{2}}}{ \pi } = ~11.3cm[/tex]
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