title: Check if a circle is contained in another circle
body: <p>I'm trying to check if a circle is contained within another circle. I'm not  sure if the math behind it is the problem or if its my if statement because I keep getting <code>True</code> for anything I pass. </p>
  
  <pre><code>#Get_center returns (x,y)
  #Get_radius returns radius length
  def contains(self,circle):
      distance = round(math.sqrt((circle.get_center()[0]-self.get_center()[0])**2 + (circle.get_center()[1] - self.get_center()[1])**2))
      distance_2 = distance + circle.get_radius()
      if distance_2 &gt; distance:
          return True        #Circle 2 is contained within circle 1
  </code></pre>