Respuesta :

Answer:

18cm

Step-by-step explanation:

Perimeter of triangle= a+a+a (side + side+ side)

Perimeter of triangle= 6 cm+6cm+6cm

Perimeter of triangle= 18cm

Answer:

18cm

Step-by-step explanation:

6+6+6=18cm

since it is an equilateral triangle, so all side are the same