# This program inputs a radius and calculates the area and circumference of a
# circle

# creates circle class
class Circle:

    # constructor
    def __init__(self, radius):
        self.radius = radius
        self.circumference = 0

    # getter and setter for radius
    def get_radius(self):
        return self.radius

    def set_radius(self, radius):
        self.radius = radius

    # calculates area and returns it
    def calc_area(self):
        return 3.14 * self.radius**2

    # calculates circumference and returns it
    def calc_circumference(self):
        self.circumference = 3.14 * 2 * self.radius
        return self.circumference

    def calc_arc(self, angle):
        percentage_of_circle = angle/360
        return self.circumference * percentage_of_circle
        

def main():
    # gets input from user
    radius = int(input("Enter radius of circle: "))

    # creates new circle object
    circle1 = Circle(radius)

    # prints out radius of circle1 object
    print("Radius: {}".format(circle1.get_radius()))
    
    # prints area of circle1 object
    print("Area: {}".format(circle1.calc_area()))

    # prints circumference of circle1 object
    print("Circumference: {}".format(circle1.calc_circumference()))

    arc_angle = int(input("Enter arc angle: "))
    print("Arc length with angle of {} is {}".format(arc_angle, circle1.calc_arc(arc_angle)))

# Starts the program
main()