X axis because of its sequence that it is involved with a reflection which is a transformation
You can do
3 * 2 and 11 * 2 which would be 6:22 and is still equal to the ratio 3:11. Your explanation can be the when divided by 2 or the number you multiplied by, you would get the original ratio
Examples:
6:22
9:33
12:44
pi·18.6^2·123°/360° - 1/2·18.6^2·SIN(123°) = 226.3