
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
A rectangle's length is measured to be 30 cm, but the measurement error could be up to 10%. If the width of the rectangle is known to be exactly 15 cm, calculate the largest possible percent error in the computed area of the rectangle.

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