4*5,2*12,in any even number way
But this is not a question. proof? no question mark
Answer:
When the scale factor between two circles is “x” the scale factor between the radius is also “x” and the scale factor of the area is “x^2"
this is only one possible answer. For example, instead of radius, you could have put diameter or circumference.
Answer:
400 is the answer to the botom and a b c and d
Step-by-step explanation: