Answer:
Scale factor = 2
Step-by-step explanation:
Scale factors deal multiplication. So, you would need to find a number to multiply by 6 to get 12. You can do this by doing 12 / 6.
12 / 6 = 2
Ok I'm assuming that know what??
24 cm squared
cut the dotted line and move the new triangle to the other side this makes a square 4*6=24 cm squared.