Răspuns :
Peri=4l
4l=1=> l=1:4=> l=0.25
Arie=l*l
Arie=0.25*0.25
Arie=0.0625
4l=1=> l=1:4=> l=0.25
Arie=l*l
Arie=0.25*0.25
Arie=0.0625
P= 4*l A = l la puterea 2
1=4*l A= 0,25 *0,25
l = 1:4 A= 0,0625.
l =0,25
1=4*l A= 0,25 *0,25
l = 1:4 A= 0,0625.
l =0,25