Php Script for area of Circle

on

 

Create Form For Inserting Radius For Calculating area of a circle


(areacircle.html)

<!DOCTYPE html>

<html>

<body>

<form action="circle.php" method="POST">

Enter radius:<input type="number" name="n1">

<br>

<input type="submit" value="submit">

Output




Now Embed PHP into Form Tag


<?php

$pi=3.14;

$radius=$_POST["n1"];

$circle=$pi*$radius*$radius;

echo "<h1>Area of circle is:$circle</h1>";

?>

Output



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