Respuesta :

Perimeter = Sum of all sides

Sides of triangle are

  • 9 in
  • 12 in
  • 15 in

Now , Calculating perimeter

Perimeter = 9 + 12 + 15

Perimeter = 36 in

Answer:

P = 36 in

Step-by-step explanation:

A+B+C=P

So A would be 9,B would be 12, And C would be 15 add that all up and you get 36.