Question 1157172
the scale factor increases each part of the object by the same ratio.
firt by 3 and then by 4 makes the final object equal to 12 times as large as the original.
here's a reference.
<a href = "https://www.katesmathlessons.com/scale-factors-of-similar-figures.html" target = "_blank">https://www.katesmathlessons.com/scale-factors-of-similar-figures.html</a>
the sides of your first figure are multiplied by 3, therefore, the sides are 3 times as large.
the side of your second figure are multiplied y 4, therefore the sides are 4 times as large.
let the original side length be be x.
the side length of the second figure is 3 * x = 3x
the side length of the the third figure is 4 * 3 * x = 12x.