
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
Charlie and Dana each have a sheet of paper. Charlie's sheet measures 7 inches by 9 inches, and Dana's sheet measures 5 inches by 10 inches. Charlie forms a cylinder by taping the 9-inch sides together without overlap, and Dana uses the 5-inch sides for her cylinder. Calculate $\pi$ times the positive difference of the volumes of the two cylinders.

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