Question

What is the approximate scale factor dilating from the blue image to the red image? Explain how you figured this out.

Answer 1

The approximate scale factor dilating from the blue image to the red image is 3.5

Explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor

see the attached figure to better understand the problem

Let

z------> the scale factor

`z=(A'B')/(AB)`

Observing the attached figure

AB=x

A'B'=3.5x

substitute

`z=(3.5x)/(x)=3.5`