Răspuns :
Răspuns:
[tex]P=2(L+l)\\\\l=L-20\\\\840:2+20=L+L\\\\440=2L= > L=440:2= > L=220m-lungimea\\\\l=220-20= > l=200m-latimea\\\\A=L*l\\\\A=220*200=44000m^2[/tex]
Răspuns:
[tex]P=2(L+l)\\\\l=L-20\\\\840:2+20=L+L\\\\440=2L= > L=440:2= > L=220m-lungimea\\\\l=220-20= > l=200m-latimea\\\\A=L*l\\\\A=220*200=44000m^2[/tex]