Area of Triangle

Area of a triangle is calculated by the following Mathematical formula,

Area of Triangle in PHP

Program to calculate area of triangle with base as 10 and height as 15 is shown.

Example:

<?php
 $base = 10;
 $height = 15;
 echo "area with base $base and height $height= " . ($base * $height) / 2;
 ?>

Output:

Area of Triangle with Form in PHP

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

Example:

<html>
<body>
<form method = "post"> 
Base: <input type="number" name="base"> 
<br><br>
Height: <input type="number" name="height"><br> 
<input type = "submit" name = "submit" value="Calculate"> 
</form> 
</body> 
</html>
<?php 
if(isset($_POST['submit']))
    { 
$base = $_POST['base']; 
$height = $_POST['height']; 
$area = ($base*$height) / 2; 
echo "The area of a triangle with base as $base and height as $height is $area"; 
} 
?> 

Output: