I'm not sure you are asking the right question? it tells you what the radius is right there. What is the question asking
The answer for your question is 12.
When 2 lines are coinciding, this means its the same line.
One equation is simply a multiple of the other.
8x = 4x*2
This means the multiplier is 2
5y*2 = 10y
8*2 = 16
The missing values are 10y and 16
Keep, Change, Flip
5/7 x 4/3 = ?
