<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\0221A";
}
</style>
</head>
<body>
<p>Square Root using Hexa Decimal: √</p>
<p>Square Root using HTML Code: √</p>
<p>Square Root using HTML Entity: √</p>
<p id="point">Square Root using CSS Entity: </p>
</body>
</html>