Can someone help me write a program to calculate the cirmference of a circle please

Answer 1

from where u belong???

Answer 2

yaa

Answer 3

# include <iostream.h>
int main ( )
{
int r, area;
cout <<"enter radius of circle";
cin >> r;
area = 3.14*r*r;
cout <<"area="<< area;
return 0;
}

Answer 4

sorry I wrote to find for area of circle

Answer 5

just change formula

Answer 6

thanks it will help

Answer 7

#include<iostream>
using namespace std;
void main (){
//r=radius
double r;
const double pi=3.14;
cout<<"enter the value of r"<<endl;
cin>>r;
cout<<"the circumference of a circle is"<<2*r*Pi<<endl;
}