Class “Circle” to compute the area and the perimeter of a circle

Write a python class named circle constructed by a radius and two methods
which will compute the area and the perimeter of a circle.
class Circle():
    def __init__(self, r):
        self.radius = r

    def area(self):
        return self.radius**2*3.14

    def perimeter(self):
        return 2*self.radius*3.14

NewCircle = Circle(8)
print(NewCircle.area())                        # 200.96
print(NewCircle.perimeter())           # 50.24