![\bf \textit{surface area of a cone}\\\\ SA=\pi r\sqrt{r^2+h^2}+\pi r^2~~ \begin{cases} ~\hfill r&=radius\\ ~\hfill h&=height\\ \sqrt{r^2+h^2}&=slant~height\\[-0.5em] \hrulefill&\hrulefill\\ ~\hfill r&=6\\ \sqrt{r^2+h^2}&=18 \end{cases} \\\\\\ SA=\pi (6)(18)+\pi (6)^2\implies SA=108\pi +36\pi \implies SA=144\pi](/tpl/images/0489/3887/abfc4.png)
Find the surface area of the cone in terms of pie.
a 90 (pie) cm^2
b 180 (pi...
Mathematics, 31.01.2020 10:02 ajbrock1004
Find the surface area of the cone in terms of pie.
a 90 (pie) cm^2
b 180 (pie) cm^2
c 144 (pie) cm^2
d 108 (pie) cm ^2
Answers: 1
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