#include <iostream.h>
#include <conio.h>
void main()
{
const float PHI = 3.141592;
float jari2 = 7.0, luas, keliling;
luas = 0.5 * PHI * jari2 * jari2;
keliling = 2 * PHI * jari2;
cout<<"Luas =
"<<luas<<endl;
cout<<"Keliling =
"<<keliling<<endl;
getch();
}
Outputnya:
