The figures are similar.
the side that is 16 on A is similar to the side that measures 4 on figure B
24 is similar to 6
32 is similar to 8
24 is 4 times 6
24 / 6 = 4
32 is 4 times 8
32 / 4 = 4
and 16 is 4 times 4
16 /4 =4
Figure A is 4 times bigger than Figure B. That is your scale factor.
