
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
There are two concentric circles. The area of the smaller circle is 4π square units, and the area of the ring formed between the two circles is also 4π square units. What is the diameter of the larger circle?

Present the answer in LaTex format: \boxed{Your answer}
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