Respuesta :

xavier2019
nnnnjnn&njjjjjjjjjjjjjjjjjuujuj
jipa
Answer:
2(a-9) + 2(3a + 1).

You want 2 of each side because perimeter is the added lengths of all of the sides. If you can assume it is a rectangle and therefore has two sets of even sides, that is the answer.