Write a program to find the area and circumfer of circle in c++ program
#include <iostream>
#define pi 3.14
using namespace std;
int main()
{
float r,ar,c;
cout<<"enter the radius of the circle";
cin>>r;
ar=pi*r*r; //logic
c=2*pi*r;
cout<<"circunfrence="<<c<<endl;
cout<<"area="<<ar;
return 0;
}
Output:-
enter the radius of circle3
circunfrence=18.84
area=28.26