title: MySQL calculate Latitude and Longitude radius
body: <p>I have a table with latitude(lat) and longitude(lng).</p>
  
  <p>I want to get results with in a 35 kilometers (20 miles) radius.</p>
  
  <p>I have a central latitude of "-38.156900" and longitude of "144.349150".</p>
  
  <p>Using MySQL how can I work this out?</p>
  
  <p>Any help will be appreciated.</p>