
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
Juan needs to compute the area of a square, but his measurement of the side length has an error of up to $20\%$. If the actual side length of the square is 30 cm, calculate the largest possible percent error, in percent, in Juan's computed area of the square.

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