Răspuns :
Bmica I-----I-----I
Bmare I-----l-----I-----I
2p=90
p=90:2
p=45
P=45*5
P=225
p= un segment
P=panglica
Bmare I-----l-----I-----I
2p=90
p=90:2
p=45
P=45*5
P=225
p= un segment
P=panglica
b = 2/3 * a
b = 90 m
90 = 2a/3
a = 90 * 3 : 2
a = 270 : 2
a = 135 m
90 + 135 = 225 m masoara panglica
b = 90 m
90 = 2a/3
a = 90 * 3 : 2
a = 270 : 2
a = 135 m
90 + 135 = 225 m masoara panglica