input: Write a python function to create a Circle class with methods to calculate the area and circumference.
  assert Circle(3).get_area() == 28.26
  assert Circle(5).get_area() == 78.5
  assert Circle(3).get_circumference() == 18.84
  assert Circle(5).get_circumference() == 31.400000000000002
output: class Circle:
      def __init__(self, radius):
          self.radius = radius
  
      def get_area(self):
          return 3.14 * self.radius * self.radius
  
      def get_circumference(self):
          return 2 * 3.14 * self.radius