Create an abstract class Shape with methods area() and volume ). Derive three classes rectangle (length, breath), Circle(radius) and Cylinder(radius, height), Calculate area and volume of all. (Use Method overriding).
<?php
define('PI',3.14);
define('FOUR_THIRDS',
4/3);
abstract
class Shape
{
private $x = 0;
private $y = 0;
private $l = 0;
private $b= 0;
private $h = 0;
public abstract function area();
public abstract function volume();
}
class
Rectangle extends Shape
{
function __construct($x, $y)
{
$this->x = $x;
$this->y = $y;
}
function area()
{
return $this->x *
$this->y;
}
function volume()
{
return $this->l *
$this->b * $this->h;
}
}
class
Cylinder extends Shape
{
function __construct($x, $y)
{
$this->x = $x;
$this->y = $y;
}
function area()
{
return $area =
2*PI*$this->x*($this->x+$this->y);
}
function volume()
{
return $vol =
PI*$this->x*$this->x*$this->y;
}
}
class
Circle extends Shape
{
function __construct($x)
{
$this->x = $x;
}
function area ()
{
}
function volume ()
{
}
}
$c
= new cylinder(12,4);
echo "<br>Cylinder Area :
".$c->area();
echo "<br>Cylinder Volume :
".$c->volume();
echo
"<br>-----------------------------------------------------------------";
echo "<br>Rectangle Area :
".$r->area();
$r=new Rectangle(12, 4, 4);
echo "<br>Rectangle Volume
: ".$r->area();
echo
"<br>-----------------------------------------------------------------";
$circle = new Circle(12);
echo "<br>Circle Area :
".$circle->area();
echo "<br>Circle Volume :
".$circle->volume();
?>
