3. Given a regular hexagon $A B C D E F$, with side $10 \sqrt[4]{27}$. Find the area of the union of triangles ACE and BDF.

![](https://cdn.mathpix.com/cropped/2024_05_06_b7cc51e9ffdd04fa7b93g-2.jpg?height=526&width=560&top_left_y=191&top_left_x=931)
Answer: 900

## Examples of how to write answers:

14

$1 / 4$

1.4

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