
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
An underground tunnel with a circular cross-section of radius $r=2,3 \mathrm{~m}$ requires a leveling concrete layer at the bottom. The surface of the concrete layer is horizontal, and its thickness measured along the vertical axis (i.e., the height of the segment of the circular cross-section) is $0,7 \mathrm{~m}$. How much cement (in quintals) is needed to concrete a $1 \mathrm{~km}$ long tunnel if the finished concrete contains $150 \mathrm{~kg}$ of cement per cubic meter?

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