This circle has...
A radius of: 21A diameter of: 42
A circumference of: 131.94689145077
An area of: 1385.4423602331
<?php
include('includes/header.php');
$r = rand(0,100);
$radius = $r;
$diameter = $radius * 2;
$circumference = M_PI * $diameter;
$area = M_PI * pow($radius, 2);
echo('<h1>This circle has...</h1>');
echo("A radius of: $radius <br>");
echo("A diameter of: $diameter <br>");
echo("A circumference of: $circumference <br>");
echo('An area of: ' . $area . '<br>');
echo("<h1>The AREA is $area ---</h1>");
include('includes/footer.php');
?>