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<!--
Name: Lee Cebula
Date: 2/2/09
Instructor: Dr. Wang
Title: circle1.php
Goal: Recieve radius value and output area
-->
<HTML>
<HEAD>
<TITLE>
Variable Example
</TITLE>
</HEAD>
<BODY>
<CENTER>
<FONT COLOR=blue>
<H2>
Calculate the Area of a Circle
</H2>
</CENTER>
</FONT>
<FONT SIZE=4 COLOR=red>
<?php
$radius = $_POST["radius"];
$area = M_PI*($radius*$radius);
$a = number_format($area,2);
print ("radius= $radius
<BR>
area= $a");
?>
</FONT>
</BODY>
</HTML>