circle

class Circle:
    def __init__(self, radius):
        self.radius = radius
        self.pi = 3.14

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

    def get_area(self):
        area = self.pi * self.radius**2
        return area

    def get_circumference(self):
        res = 2 * self.radius * self.pi
        return res

circle = Circle(10)
circle.set_radius(12)
print(circle.get_area())
print(circle.get_circumference())