\[\boxed{\mathbf{388.}ОК\ ГДЗ\ –\ домашка\ на\ 5}\]
\[Формула\ для\ вычисления\ \]
\[площади\ сферы:\]
\[S = 4\pi R^{2}.\]
\[\textbf{а)}\ R = 6\ см:\]
\[S = 4\pi \cdot 6^{2} = 144\pi\ см^{2}.\]
\[\textbf{б)}\ R = 2\ дм:\ \]
\[S = 4\pi \cdot 2^{2} = 16\pi\ дм^{2}.\]
\[\textbf{в)}\ R = \sqrt{2}\ м:\]
\[S = 4\pi \cdot \left( \sqrt{2} \right)^{2} = 8\pi\ м^{2}.\]
\[\textbf{г)}\ R = 2\sqrt{3}\ см:\]
\[S = 4\pi \cdot \left( 2\sqrt{3} \right)^{2} = 48\pi\ см^{2}.\]