
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
Tony plans to paint 20 right cylindrical columns, excluding the top and bottom faces. Each column is 15 feet tall and has a diameter of 8 feet. One gallon of paint covers 400 square feet. How many gallons of paint does Tony need to buy, given that paint is sold only in full gallons?

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