
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
The side edges OA, OB, and OC of the triangular pyramid O-ABC are pairwise perpendicular and have lengths of 2cm, 2cm, and 1cm respectively. What is the surface area of its circumscribed sphere?

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