Answer:
Step-by-step explanation:
Here, we want to find the scale factor of the smaller to the larger figure
What we basically want to have is a number that we multiply bya side length in the smaller shape to give the corresponding side for the larger shape
Looking at the given figure, we can see that the sides 4 in the smaller shape and the side 20 in the larger side are corresponding
Mathematically, that means if we multiplied the smaller shape by 5, we get the length of the larger shape
The scale factor is thus 1 to 5 or 1:5