Respuesta :

9+9+4= 22

Assuming you draw triangle A on top
garydesir1
Hello there ^ _ ^

The formula is : P = a + b + c
It is a triangle isosceles which means AB = AC
We have AB = 9  AC = 9  = BC = 4
All we have to do is add them all together.
P = 9 + 9 + 4
P = 22



I hope this help!