Answer:

Explanation:
We have been given that the figure B is a scaled copy of figure A. We are asked to find the scale factor of from figure A to figure B.
To find the scale factor, we will divide side length of figure B by its corresponding side in figure B.
We can see that side in figure B is 64 units and its corresponding side in figure A is 16 units.


Therefore, the scale factor is 4.