phpOMS/Math/Shape/D3/Cone.php

<?php
/**
 * Orange Management
 *
 * PHP Version 7.0
 *
 * @category   TBD
 * @package    TBD
 * @author     OMS Development Team <dev@oms.com>
 * @author     Dennis Eichhorn <d.eichhorn@oms.com>
 * @copyright  2013 Dennis Eichhorn
 * @license    OMS License 1.0
 * @version    1.0.0
 * @link       http://orange-management.com
 */
namespace phpOMS\Math\Algebra;

class Cone
{

    /**
     * Volume
     *
     * @param float $r Radius
     * @param float $h Height
     *
     * @return float
     *
     * @since  1.0.0
     * @author Dennis Eichhorn <d.eichhorn@oms.com>
     */
    public static function getVolume(\float $r, \float $h)
    {
        return pi() * $r ** 2 * $h / 3;
    }

    /**
     * Surface area
     *
     * @param float $r Radius
     * @param float $h Height
     *
     * @return float
     *
     * @since  1.0.0
     * @author Dennis Eichhorn <d.eichhorn@oms.com>
     */
    public static function getSurface(\float $r, \float $h)
    {
        return pi() * $r * ($r + sqrt($h ** 2 + $r ** 2));
    }

    /**
     * Slant height
     *
     * @param float $r Radius
     * @param float $h Height
     *
     * @return float
     *
     * @since  1.0.0
     * @author Dennis Eichhorn <d.eichhorn@oms.com>
     */
    public static function getSlantHeight(\float $r, \float $h)
    {
        return sqrt($h ** 2 + $r ** 2);
    }

    /**
     * Height
     *
     * @param float $V Volume
     * @param float $r Radius
     *
     * @return float
     *
     * @since  1.0.0
     * @author Dennis Eichhorn <d.eichhorn@oms.com>
     */
    public static function getHeight(\float $V, \float $r)
    {
        return 4 * $V / (pi() * $r ** 2);
    }
}