What times what equals 12 but when added equals 13

1 times 12 equals 12 but when added equals 13.

1 * 12 = 12

12 + 1 = 13

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's