
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
Given that the base of the rectangular container is a square with a side length of 20mm and a height of 40mm, the opening of the container is an inscribed circle of the upper square base, and the water depth in the container after 24 hours is 10mm, calculate the approximate amount of rainfall measured by the student.

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