Machine Problem

Write a program that uses ng-app directive that will calculate the area of the circle. Using the following formula : area = 3.14 * radius * radius

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Program Listing

<!-- index.htm
  Author   : Prof. Jake Rodriguez Pomperada, MAED-IT, MIT
  Date     : July 26, 2021 Monday 10:43 AM
  Place    : Bacolod City, Negros Occidental
  Websites : and
  Email    :
<title>Calculate Area of Circle Using ng-app in AngularJS</title>
body {
   font-family: "arial";
   font-style: bold;
   font-size: 18px;
<script type="text/javascript" src="angular.min.js"></script>
<h3>Calculate Area of Circle Using ng-app in AngularJS</h3>
<div ng-app="myApp" ng-controller="Area_Circle_Controller">
The given radius {{radius | number : 2}}. <br><br>
The area of the circle is {{area | number : 2}}
var app = angular.module("myApp", []);
app.controller("Area_Circle_Controller", function($scope) {

    $scope.radius = 5.0;
    $scope.area = (3.14 * $scope.radius * $scope.radius);