
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
In a circle with radius 5, diameters $AB$ and $CD$ intersect at right angles at the center of the circle, denoted as $O$. Calculate the area of the shaded region formed by two right triangles and two sectors, where triangles $AOB$ and $COD$ are shaded, as well as sectors $AOC$ and $DOB$.

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