Does the size of something affects its properties

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

This is about circle theorems. someone asap : (

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?