Similarity and Proof Unit activity Course activity:AA, SAS, and SSS criteria for Similar triangles

I'm stuck on these two activities on Plato for geometry, If anyone has done these before please help I am having a very hard time and my anxiety is kicking in. I'm literally crying right now

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

so then what are you asking?

step-by-step explanation:

a c

step-by-step explanation: