<html>
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  <title>Demo of Leaflet.GeometryUtil distance and length</title>
</head>
<body>
  <iframe height='550' scrolling='no' src='https://embed.plnkr.co/fmV4B2XC0c5cnlQn6Cq9/' frameborder='no' allowtransparency='true' allowfullscreen='true' style='width: 100%;'>
  </iframe>
</body>
</html>

<html>
<head>
  <meta charset="utf-8">
  <title>Demo of Leaflet.GeometryUtil distance and length</title>
</head>
<body>
  <iframe height='700px' src='https://embed.plnkr.co/fmV4B2XC0c5cnlQn6Cq9/' frameborder='no' allowtransparency='true' allowfullscreen='true' style='width: 100%;'>
  </iframe>
</body>
</html>

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Update height of iframe tutorial
