Answer:
21p + 2
Step-by-step explanation:
We have
3p - 6
6p + 1
3p + 1
9p + 6
We just add them all up
3p - 6 + 6p + 1 + 3p + 1 + 9p + 6
Combine like terms
(We add the p's first, then the numbers)
21p - 6 + 1 + 1 + 6
Then we add / subtract the numbers
21p + 2
Therefore, the perimeter is 21p + 2
