एक वृत्त की परिधि की गणना करने के लिए एक फ़ंक्शन बनाएँ
def calculate_circle_area(radius):
    """
    This function calculates the area of a circle given its radius.
    """
    pi = 3.14159
    area = pi * radius ** 2
    return area

def calculate_circle_circumference(radius):
    """
    This function calculates the circumference of a circle given its radius.
    """
    pi = 3.14159
    circumference = 2 * pi * radius
    return circumference

# Example usage
radius = 5
area = calculate_circle_area(radius)
circumference = calculate_circle_circumference(radius)
print("A circle with a radius of", radius, "has an area of", area, "and a circumference of", circumference)