please help 1-3

Question

Answer 1

1)

The height of tallest doll is .

Heights are scaled by a scale factor of .

Find the heights of the next tallest doll.

Height of the next tallest doll is .

Answer 2

2)

First rectangle length and width is and .

Consider the scale factor as ratio between length and width is .

Substitute and in .

Second rectangle length and width is and .

Substitute and in .

Third rectangle length and width is and .

Substitute and in .

Therefore, First and third rectangles are similar.