Question 546850
No, you are on the wrong track. Perimeter of pentagon (4x+4) is(=) 3 times(3(?)) the perimeter of a triangle(3(x+3)).


So, according to the previous analysis:


4x+4=3(x+3)
4x+4=3x+9
x=5


Perimeter of pentagon
=4(5)+4
=20+4
=24


Perimeter of triangle
=5+3
=8


If the perimeter of the octagon equals the perimeter of pentagon(P) OR triangle(T)
P=24÷8
=3


T=8÷8
=1

***Does not know the what the perimeter of the octagon equals so I do both for you***