LINGKARAN

#include
#include
void main()
{
const float phi=3.14;
float r,luas,keliling;
r=7.2;
luas=phi*r*r;
keliling=2*phi*r;
cout<<"******************"< cout<<"Luas lingkaran="< cout<<"Keliling lingkaran="< cout<<"********************";
getch();
}