
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
Mr. Grindle said that his neighbor donated some land to his garden. He was able to fence off this land using four straight fences with lengths of $70$, $80$, $90$, and $100$ meters, respectively. What is the maximum area he was able to enclose with these fences?

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