cs2370 Notes: 20 Classes and Methods

from math import pi

def circle_area(radius):
    return pi * pow(self.radius, 2)

class Circle:
    def area(self):
        return pi * pow(self.radius, 2)

from math import pi

class Circle:
    def __init__(self, radius):
        self.radius = radius
    
    def area(self):
        return pi * pow(self.radius, 2)