class Rectangle:
    def getarea(self):
        return self.x * self.y


class Rectangle:
    def __init__(self, x, y):
        self.x = x
        self.y = y
    def getarea(self):
        return self.x * self.y
        
class Circle:
    def __init__(self, r):
        self.r = r
    def getarea(self):
        return math.pi*self.r*self.r

shapes = [Rectangle(10,3), Circle(1)]
totarea = 0.0
for shape in shapes:
    totarea = totarea + shape.getarea()