ABCD paralelogram
AB = 2BC + 16
P = 2L + 2l
P = 2AB + 2BC
P = 2(2BC + 16) + 2BC
P = 4BC + 32 + 2BC
P = 6BC + 32
146 = 6BC + 32
6BC = 146 - 32
6BC = 114
BC = 114 : 6
BC = 19 cm
146 = 2AB + 2BC
146 = 2AB + 19·2
146 = 2AB + 38
2AB = 146-38
2AB = 108
AB = 54 cm
AB = 54 cm
BC = 19 cm