What scale factor is used to go from rectangle 1 to rectangle 2? 更 Rectangle Reclana 2 6 25% 50036 100% 2009

Notice that the side of the rectangle 2 is twice the side of the rectangle 1:
[tex]6\times2=12[/tex]As a percentage, 2 = 200%.
Then, the scale factor that has been used, is 200%.