Răspuns :
P = 90m
l = L : 2 ; L = l x 2
l /......../
L/......../......../
3p = 90
1p = 30
l = 30 x 1 = 30
L = 30 x 2 = 60
l = L : 2 ; L = l x 2
l /......../
L/......../......../
3p = 90
1p = 30
l = 30 x 1 = 30
L = 30 x 2 = 60
P = 90m
l = L : 2 ; L = l x 2
l /......../
L/......../......../
3p = 90
1p = 30
l = 30 x 1 = 30
L = 30 x 2 = 60
l = L : 2 ; L = l x 2
l /......../
L/......../......../
3p = 90
1p = 30
l = 30 x 1 = 30
L = 30 x 2 = 60