1.a)L=2,5cm=>A=2,5x2,5=6,25cm²; P=4x2,5=10cm
b)L=1intreg si 1/3=4/3=>A=(4/3/)²=16/9cm² ; P=4x4/3=16/3cm
c)L=1,(4)=1intreg si 4/9=13/9=>A=(13/9)²=169/81cm² ; P=4x13/9=52/9cm
2.a)L=2,5cm si l=1,9cm=>A=2,5x1,9=4,75cm² ; P=2x2,5+2x1,9=8,8cm
b)L=7intregi si 1/3=22/3 si l=2intregi si 1/3=7/3=>A=22/3x7/3=154/9cm² ; P=2x22/3+2x7/3=44/3+14/3=58/3cm
c)L=4,(1)=4intreg si 1/9=37/9 si l=1,(2)=1intreg si 2/9=11/9=>A=37/9x2/9=74/9cm² ; P=2x37/9+2x11/9=74/9+22/9=96/9=32/3cm