
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
If both the base diameter and the height of a cylinder are equal to the diameter of a sphere, and the surface areas of the cylinder and sphere are denoted as $S_1$ and $S_2$ respectively, calculate the ratio $S_1:S_2$.

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