Răspuns :
P=80 cm.
P=L+L+l+l
L=4xl
4 l+4 l+l+l=80
10 l=80
l=80:10
l=8 cm
L=4x8
L=32 cm
V: 32+32+8+8=80 cm
R: Lungimea=32 cm.
latimea = 8 cm.
P=L+L+l+l
L=4xl
4 l+4 l+l+l=80
10 l=80
l=80:10
l=8 cm
L=4x8
L=32 cm
V: 32+32+8+8=80 cm
R: Lungimea=32 cm.
latimea = 8 cm.