Answer:
11
Step-by-step explanation:
A triangle has 3 sides.
Add up all the sides to get the perimeter.
So.... divide the perimeter (33) by the number of sides (3) and you get the length of each side. (11)
[tex]33/3 = 11[/tex]
We can check this by using the perimeter of a triangle formula. [tex]P = a + b +b[/tex]
[tex]P = 11+11+11[/tex]
[tex]P = 33[/tex]
