### initial set up
penup()
setposition(0,-200)
pendown()

### drawing the circle
def m_circle(radius):
    begin_fill()
    color("gray")
    circle(radius)
    end_fill()

### getting the users input for the bottom circle radius    
get_radius = int(input("What is this circles radius?: "))


### draws the circles using the paramater and sets proper position afterwards
m_circle(get_radius)

penup()
left(90)
forward(200)
right(90)

m_circle(get_radius / 2)

penup()
left(90)
forward(100)
right(90)

m_circle(get_radius / 4)