Write a Python function `find_hypotenuse(a: float, b: float) -> float` that calculates the hypotenuse of a right-angled triangle given the lengths of the other two sides. Use the Pythagorean theorem to compute the result.
The Pythagorean theorem states:
\[ c^2 = a^2 + b^2 \]
Where:
- `c` is the hypotenuse (the side opposite the right angle).
- `a` and `b` are the other two sides of the triangle.
#### Example Usage
```python [main.nopy]
find_hypotenuse(3, 4) # Expected output: 5.0
find_hypotenuse(5, 12) # Expected output: 13.0
find_hypotenuse(8, 15) # Expected output: 17.0
```
#### Constraints
- The inputs `a` and `b` will always be positive floating-point numbers.
- The function should return a floating-point number rounded to two decimal places.