find the volume of a regular polygon circumscribed around a cone in php

To find the volume of a regular polygon circumscribed around a cone, we need to know the number of sides of the polygon, the radius of the cone's base, and the height of the cone. We can use the following formula to find the volume:

main.php
V = (1/3) * pi * h * r^2 * N * sin(2*pi/N)
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Where V is the volume, h is the height of the cone, r is the radius of the cone's base, N is the number of sides of the polygon, and pi is the mathematical constant pi.

Here's the PHP code to implement this formula:

main.php
<?php
function conePolygonVolume($height, $radius, $numSides) {
    $volume = (1/3) * pi() * $height * pow($radius, 2) * $numSides * sin(2*pi()/$numSides);
    return $volume;
}

// Example usage
echo conePolygonVolume(10, 5, 6);  // Find the volume of a cone with height 10, radius 5, and a hexagonal base
?>
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This code defines a function conePolygonVolume that takes the height, radius, and number of sides of the polygon as arguments, and returns the volume of the cone. The example usage at the bottom of the code calculates the volume of a cone with height 10, radius 5, and a hexagonal base.