Area of a rectangle is calculated by the mathematical formula,

### Length ∗ Breadth = Area

Logic:

Take two variables.

Multiply both of them.

## Program:

Program to calculate area of rectangle with length as 14 and width as 12 is shown.

```
<?php
$length = 14;
$width = 12;
echo "Area of Rectangle is $length * $width= " . ($length * $width) . "<br />";
?>
```

Output:

## Area of Rectangle with Form

Program to calculate area of rectangle by inserting values in the form is shown.

```
<html>
<body>
<form method = "post">
Width: <input type="number" name="width">
<br><br>
Length: <input type="number" name="length"> <br>
<input type = "submit" name = "submit" value="Calculate">
</form>
</body>
</html>
<?php
if(isset($_POST['submit']))
{
$width = $_POST['width'];
$length = $_POST['length'];
$area = $width*$length;
echo "The area of a rectangle with $width x $length is $area";
}
?>
```

Output:

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