
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
Elena purchases a rectangular mirror (the shaded region) that fits exactly inside a frame. The outer perimeter of the frame measures 100 cm by 140 cm. The width of each side of the frame is 15 cm. What is the area of the mirror?

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