input: Write a python function to calculate the area and circumference of a circle using a class.
  assert Circle(5).get_area() == 78.5
  assert Circle(5).get_circumference() == 31.400000000000002
  assert Circle(10).get_area() == 314.0
  assert Circle(10).get_circumference() == 62.800000000000004
output: import math
  
  class Circle:
      def __init__(self, radius):
          self.radius = radius
  
      def get_area(self):
          return round(math.pi * (self.radius ** 2), 1)
  
      def get_circumference(self):
          return round(2 * math.pi * self.radius, 1)