Răspuns :
[tex]\it \ell=100m;\ \ \ L=300\ m\\ \\ \mathcal{P}-2=2(300+100)-2=800-2=798\ m\\ \\ 2\cdot798=1596\ m\ \ (s\hat arm\breve a)[/tex]
[tex]\it \ell=100m;\ \ \ L=300\ m\\ \\ \mathcal{P}-2=2(300+100)-2=800-2=798\ m\\ \\ 2\cdot798=1596\ m\ \ (s\hat arm\breve a)[/tex]