Răspuns :
80 : 2= 40 cm
2×l+2×L=40×2+40×2=80+40×2=80+80=160 cm
160+80=240 cm
Vacanta plăcută!
2×l+2×L=40×2+40×2=80+40×2=80+80=160 cm
160+80=240 cm
Vacanta plăcută!
l= latime
L= lungime
l= 80/2= 40 cm
P= LX2+ lx2
P= 160+80
P=240cm
L= lungime
l= 80/2= 40 cm
P= LX2+ lx2
P= 160+80
P=240cm