PI=3.14
class shape:
    __x=0
    __y=0
    def get__x(self):
        return shape.__x
    def get__y(self):
        return shape.__y
    def put_x(self):
        shape.__x=float(input("请输入x:"))
    def put_y(self):
        shape.__y=float(input("请输入y:"))
class Circle(shape):
    r=1
    def put_r(self):
        Circle.r=float(input("请输入r:"))
    def GetArea(self,R):
        area=int(PI*R*R)
        print(f"area={area}")
    def GetDistance(self,X,Y):
        distance=int((X*X+Y*Y)**0.5)  
        print(f"distance={distance}")
circle=Circle()
circle.put_x()
circle.put_y()
circle.put_r()
circle.GetArea(circle.r)
circle.GetDistance(circle.get__x(),circle.get__y())
