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9.23: Площа поверхні конусів
https://ukrayinska.libretexts.org/%D0%94%D0%BE%D0%BA%D0%BE%D0%BB%D0%B5%D0%B4%D0%B6%D0%BD%D0%B0_%D0%BE%D1%81%D0%B2%D1%96%D1%82%D0%B0/%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0/%D0%93%D0%B5%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D1%96%D1%8F/09%3A_%D0%A2%D0%B2%D0%B5%D1%80%D0%B4%D1%96_%D1%84%D1%96%D0%B3%D1%83%D1%80%D0%B8/9.23%3A_%D0%9F%D0%BB%D0%BE%D1%89%D0%B0_%D0%BF%D0%BE%D0%B2%D0%B5%D1%80%D1%85%D0%BD%D1%96_%D0%BA%D0%BE%D0%BD%D1%83%D1%81%D1%96%D0%B2
\(\begin{aligned}SA&=\pi [6(8+6)+8^{2}+6^{2}] \\ SA&=\pi [6(14)+64+36] \\ SA&=\pi [84+64+36] \\ SA&=\pi [184] \\ SA&=578.1\end{aligned}\) \(\begin{aligned}SA&=\pi [3(3+2)+3^{2}+2^{2}] \\ SA&=\pi [3(5)...\(\begin{aligned}SA&=\pi [6(8+6)+8^{2}+6^{2}] \\ SA&=\pi [6(14)+64+36] \\ SA&=\pi [84+64+36] \\ SA&=\pi [184] \\ SA&=578.1\end{aligned}\) \(\begin{aligned}SA&=\pi [3(3+2)+3^{2}+2^{2}] \\ SA&=\pi [3(5)+9+4] \\ SA&=\pi [15+9+4] \\ SA&=\pi [28] \\ SA&=87.96\end{aligned}\) \(\begin{aligned}SA&=\pi (4)^{2}+\pi (4)(6) \\ SA&=\pi (16)+\pi (24) \\ SA&=50.3+75.4\\ SA&=125.7\end{aligned}\) \(\begin{aligned} SA&=\pi (3)^{2}+\pi (3)(4.5) \\ SA&=\pi (9)+\pi (13.5) \\ SA&=28.3+42.4 \\ SA&=70.7\end{aligned}\)