Program to Find the area and perimeter of a circle

Problem statement:- Program to Find the area and perimeter of a circle.

Data requirement:-

   Input Data:-radius

  Output Data:-area, perimeter

Program in C

Here is the source code of the C Program to Program to Find the area and perimeter of a circle.

Code:

#include<stdio.h>

int main()
{
    double radius;
    double area,perimeter;

    printf("Enter the radius of the circle:");
    scanf("%lf",&radius);

    area=3.14*radius*radius;
    perimeter=2*3.14*radius;

     printf("Area of the Circle = %0.2lf",area);
     printf("\nPerimeter of the Circle = %0.2lf",perimeter);

    return 0;
}

Input/Output:

Enter the radius of the circle:5

Area of the Circle = 78.50
Perimeter of the Circle = 31.40

Program in C++

Here is the source code of the C++ Program to Program to Find the area and perimeter of a circle.

Code:

#include <iostream>

using namespace std;
int main()
{
    double radius;
    double area,perimeter;

    cout<<"Enter the radius of the circle:";
    cin>>radius;

    area=3.14*radius*radius;
    perimeter=2*3.14*radius;

    cout<<"Area of the Circle = "<<area;
    cout<<"\nPerimeter of the Circle = "<<perimeter;

    return 0;
}

Input/Output:

Enter the radius of the circle: 9

Area of the Circle = 254.34
Perimeter of the Circle = 56.52

Program in Java

Here is the source code of the Java Program to Program to Find the area and perimeter of a circle.

Code:

import java.util.Scanner;

public class AreaPerimeterCircle {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
double radius;
    double area, perimeter;

    System.out.println("Enter the radius of the circle:");
    radius=cs.nextDouble();

    area=3.14*radius*radius;
    perimeter=2*3.14*radius;

     System.out.println("Area of the Circle = "+area);
     System.out.println("\nPerimeter of the Circle = "+perimeter);
       
     cs.close();
}
}

Input/Output:

Enter the radius of the circle:

11
Area of the Circle = 379.94
Perimeter of the Circle = 69.08

Program in Python

Here is the source code of the Python Program to Program to Find the area and perimeter of a circle.

Code:

radius=int(input("Enter the radius of a circle :"))

area=3.14*radius*radius
perimeter=2*3.14*radius

print("Area =",area)
print("Perimeter =",perimeter)

Input/Output:

Enter the radius of a circle: 4
Area = 50.24
Perimeter = 25.12

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