Răspuns :
P = 4l
a ) P = 4 x 3.16 = 12 .64 m
b ) P = 4 x 0.57 = 2 . 28 cm
c ) P = 4 x 0.125 = 0.5 km
a ) P = 4 x 3.16 = 12 .64 m
b ) P = 4 x 0.57 = 2 . 28 cm
c ) P = 4 x 0.125 = 0.5 km