
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
Given a circle has a circumference of $18\pi$, using the same radius, calculate the area of the circle and the volume of the sphere, then determine the sum of the area of the circle and the volume of the sphere in terms of $\pi$.

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