[tex]A_l=2\pi r g=96\ dm^2\\
V=\pi r^2g=192\ dm^3\\
\text{ Impartim cele doua relatii}\\
\frac{2}{r}=\frac{1}{2\ dm}\Rightarrow r=4\ dm\\
\text{Inlocuim in prima relatie: }\\
4\pi g=96\Rightarrow g=\frac{24}{\pi}\\
A_b=\pi r^2=16 \pi \ dm^2\\
A_t=A_l+2A_b=96\pi +2\cdot16\pi=128\pi\ dm^2[/tex]
