39 si 40 va roooogggggg este ffoooaaarrrttteee uuurrrggeeeennnttt !!!!!!!!!!!!!!!!!

40. P dreptunghi = P patrat
Dreptunghiul: L=180m l=180:3=60m
P dreptunghi: l*2+L*2= 60*2+180*2=480m
P patrat = 4l
480=4l/:4
l patrat = 120m