For sum u add and for difference you subtract
Answer:
im not the best at this but i recommend:
Step-by-step explanation:
i recommend a website like Math w*(A)y their good at questions like these
To find the perimeter of irregular shapes in general, you just add the length of the sides.
To find the area of irregular shapes, first, draw a line to separate the two shapes, then find the area of those two shapes and add them up.
ABC is similar to PQR
that means AC/PR is a constant = 12/ 6 = 2
AC= 2 PR
AB= 2PQ
BC= 2QR
Perimeter of ABC= AB+BC+ CA=
2PQ + 2 QR + 2PR= 2( PQ+ QR+ PR)
= 2( perimeter of triangle PQR )
Perimeter of ABC= 2( perimeter of PQR) = 2* 36 = 72
Answer : 72.
