Aceasta este rezolvarea:[tex]P _{patrat}=P _{dreptunghi}
A _{dreptunghi}=56,25cm ^{2}
l _{dreptunghi}=4,5cm
L _{dreptunghi}=56,25cm ^{2} :4,5cm=12,5 cm
P _{dreptunghi}=4,5+12,5+4,5+12,5=34cm
P _{patrat}=34 cm
l _{patrat}=34:4=8,5cm
A _{patrat}=8,5*8,5= 72,25 cm ^{2}
Raspuns final: 72,25 cm ^{2} [/tex]