Răspuns :
a |-------|-------|-------|-------|-------|
b |-------|
[________________] → dif. 160
160 : 4 = 40 ( b )
a = 40 × 5 = 200
a |-------|-------|-------|-------|-------|
b |-------|
[________________] → dif. 160
160 : 4 = 40 ( b )
a = 40 × 5 = 200