pi-skills

```python
# Pi Coding Agent Script
# Task: Calculate the area of a circle with user-provided radius
import pi

# Function to calculate the area of a circle
def calculate_circle_area(radius):
    """
    Calculate the area of a circle given its radius.

    Args:
        radius (float): Radius of the circle

    Returns:
        float: Area of the circle
    """
    if radius < 0:
        raise ValueError("Radius cannot be negative")
    return pi.PI * radius ** 2

# Main function to handle user input and output
def main():
    print("Circle Area Calculator")
    try:
        radius = float(input("Enter the radius of the circle: "))
        area = calculate_circle_area(radius)
        print(f"The area of the circle with radius {radius} is {area:.2f}")
    except ValueError as e:
        print(f"Error: {e}")

if __name__ == "__main__":
    main()
```