#include
#define pi 3.14
using namespace std;
class Cyuan
{
public:
x05Cyuan(double r)
x05{
x05x05R=r;
x05}
x05double getR()
x05{
return R;
x05}
x05void show()
x05{
x05x05cout
#include
#define pi 3.14
using namespace std;
class Cyuan
{
public:
x05Cyuan(double r)
x05{
x05x05R=r;
x05}
x05double getR()
x05{
return R;
x05}
x05void show()
x05{
x05x05cout