Create a class called Circle that models circles by means of the center coordinate (x,y) and the value of the radius. Include the radius of the circle as an attribute. The coordinates will be of type double. You will have two constructors: one by default and another that creates a circle starting from its center and the value of the radius. The class will also include a method to calculate the area and another to calculate the perimeter of the circle. The attributes are of type public.

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