[tex]\displaystyle \\
\underline{Metoda ~1 ~de ~rezolvare:}\\
P_{dreptunghi} =P_{patrat} - 2 \times 8 = 96 - 2 \times 8=96-16=\boxed{80\;cm}\\ \\
\underline{Metoda ~2 ~de ~rezolvare:}\\
P_{patrat}=96\;cm \\ \\
L_{patrat}= \frac{P_{patrat}}{4}= \frac{96}{4} = 24\;cm \\ \\
L_{dreptunghi}= L_{patrat}=24\;cm \\
l_{dreptunghi}= L_{patrat}-8=24-8=16\;cm \\
P_{dreptunghi} = 2(L_{dreptunghi}+l_{dreptunghi})= \\
=2(24+16)=2 \times 40 = \boxed{80\;cm}[/tex]
