Answer:
2:1
Explanation:
If we examine the two figures we see that the length of each side of Figure B is twice the length of the corresponding side of Figure A
For example side of length 44 in Figure B corresponds to side of length 22 in Figure A
Scale Factor: Final Dimension/Initial Dimension =
Length of Figure B side/Length of Figure A corresponding side
44/22 = 2/1 or 2:1
So the scale factor from A to B is 2 or 2:1