title: how to use drawArc()
body: <p>i want to draw this arc in a panel that the preferedSize is set to (200,50):</p>
  
  <p><img src="https://i.stack.imgur.com/EgKFQ.jpg" alt="enter image description here"></p>
  
  <p>i found it hard to understand what does the parameters in <code>drawArc()</code>. how to draw this one?</p>