Answer:
9cm
Step-by-step explanation:
pls give brainlist lol thx
9 cm
As I said in my comment. I shall explain it.
Perimeter is the outside of a figure. So, to find that, you add the two given sides. Then, multiply it by 2 or add that number to itself.
3 + 1.5 = 4.5
4.5 + 4.5 = 9
