C, or the last photo, shows a reflection.
The answer would be 21 because its the same length as the other side.
I'm sorry, I don't know what is being asked.
If this is your graph then your answer is
41.41 if not ask again and put your graph or copy it then paste it in the comments
Assuming that the figures given are square such that the scale factor between them is equal to 28/8 which can be further simplified into 7/2. The ratio of the perimeter is also equal to this value, 7/2. However, the ratio of the areas is equal to the square of this value giving us an answer of 49/4.