Square B is a dilation of square A. What is the scale factor?

This question is incomplete, the missing diagram is uploaded along this answer below.

the scale factor is 5/4

Step-by-step explanation:

Given the data in the image below;

B is a dilation of square A, scale factor = ?

B is a dilation of square A, that is; B is a larger form of square A.

now, to get the scale factor;

The side length of Square B = 35

The side length of Square A = 28

so, the scale factor k will be;

K = 35 / 28

divided both the numerator and denominator by 7

K = 5/4

Therefore, the scale factor is 5/4