May I please receive help?

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)