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<!-- File name: circle1.php
Class: CS480
Date: Feb. 2, 2009
Goal: to recieve the value of the radius and calculate
the radius of a circle.
-->
<HTML>
<HEAD>
<TITLE>
Action: Calculate the Area of a circle
</TITLE>
</HEAD>
<BODY>
<CENTER>
<H2>Calculate the Area of a Circle </H2>
<FONT size=5 color=green>
<?php
$r = $_POST["radius"];
$area = M_PI * $r * $r;
$Display_area= number_format($area, 2);
print("The radius is: $r <br>");
print ("The area is: $Display_area");
?>
</BODY>
</CENTER>
</FONT>
<HTML>