Solution:
We have an irregular shape and we need to find the perimeter of the shape.
Perimeter is the distance around the edge of a shape of sum of all sides.
Perimeter = 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m + 3 m = 42 m
Therefore, the perimeter of the shape is 42 m.