A simple program to ask the user to give the radius of the circle and then it will compute the area of the circle using the C++ programming language.

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Program Listing

// C++ program to calculate area of the circle
// Author   : Jake Rodriguez Pomperada, MAED-IT,MIT
// Date     : September 18, 2020
// Email    : jakerpomperada@gmail.com
// Location : Bacolod City, Negros Occidental, Philippines

#include <iostream>
#include <iomanip>

using namespace std;

 int main() {

   float radius=0.00, area_circle=0.00;
   cout <<"\n\n"; 
   cout <<"\tArea of the Circle in C++"; 
   cout <<"\n\n"; 
   cout << "\tGive radius of circle: ";
   cin >> radius;

   area_circle = 3.14 * radius * radius;
   cout << fixed << showpoint;
   cout << setprecision(2);
   cout <<"\n"; 
   cout << "\tThe Area of the circle is " << area_circle;
   cout <<"\n\n"; 
   cout <<"\tEnd of the Program";

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