Answer:
B. Doubled
Step-by-step explanation:
The formula to find the circumference of the circle is

Now our problem says that the radius is doubled. Hence the new radius is 2r
Hence the new circumference will be



Hence our circumference gets doubled.
Answer:
Step-by-step explanation:
You need to add more description, Just by saying this question doesnt really help the reader understand what you are trying to say.
A is the answer to your question