[tex]A=L \cdot l=11~(cm^2),~iar~L,l \in N~si~L \geq l. \\ \\ 11~este~numar~prim \Rightarrow 11=1 \cdot 11 \Rightarrow~l=1~(cm)~si~L=11~(cm). \\ \\ P=2(L+l)=2(11+1)=24~(cm). \\ \\ *Observatie:~Lungimea~si~latimea~unui~dreptunghi~pot~fi~egale, \\ \\ s-ar~obtine~astfel~un~caz~particular:~ \underline{patratul}.[/tex]
