Mathematics: Surface area of cone with radius of 7 and slant hight of 9

Surface area of cone with radius of 7 and slant

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milkshakegrande101

13.03.2022

$\bf \textit{surface area of a cone}\\\\ SA=\pi r\stackrel{slant~height}{\sqrt{r^2+h^2}}+\pi r^2~~ \begin{cases} r=7\\ \sqrt{r^2+h^2}=9 \end{cases} \\\\\\ SA=\pi (7)(9)+\pi (7)^2\implies SA=63\pi +49\pi \implies SA=112\pi$

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Ответ:

breena68

13.06.2020

Mathematics

4a + 5S

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Surface area of cone with radius of 7 and slant hight of 9

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