Python: I need to get my values to print using __str__ but I dont know how

I need to print out the values of my code using __str__ but it's not printing out
I am confused because I feel like I added all the attributes correctly and it gets all the values but just doesn't print out what I need it to print out. What I am trying to do is find the area and circumference of a circle using classes, __init__ and __str__ with the radius as 3 and pi as 3.14. I really need help and if you know any way to do this it would really help

Here is the code: 


```
class Given(object):
    def __init__(self):
        self.radius = 3
        self.pi = 3.14
        stringforradius = str(self.radius)
        stringforpi = str(self.pi)
        
        
  
def __str__(self):
    print("radius = {}, pi = {}, The area of the circle is {} ".format(self.stringforradius, self.stringforpi, self.getcircumference))
    print ("radius = {}, pi = {}, The circumference of the circle is {} ".format(self.stringforradius, self.stringforpi, self.getarea))
    

class area(Given):
    def squared(self):
        self.square = self.radius * self.radius
        
    def area(self):
        self.ar = self.pi * self.square
        self.getarea = str(self.ar)
    


class circumference(Given):
    def cir(self):
        self.cir1 = 2 * self.pi * self.radius
        self.getcircumference = str(self.cir1)
        
gettingtotal = area()
gettingtotal.squared()
gettingtotal.area()
gettingtotall = circumference()
gettingtotall.cir()
gettingtotal.__str__()
gettingtotall.__str__()
```

I am confused because I feel like I added all the attributes correctly and it gets all the values but just doesn't print out what I need it to print out.