/* -*- coding: utf-8 -*-
 *
 * 948.cc:  No.948 Bomb vs Dush - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int CNT = 100;
const double PI = acos(-1.0);
const double PI2 = PI * 2;

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  double sr, lr;
  scanf("%lf%lf", &sr, &lr);
  double dd = sr * sr * 4;

  double t0 = -PI, t1 = 0.0;
  for (int cnt = 0; cnt < CNT; cnt++) {
    double t = (t0 + t1) / 2;
    double dx = lr * (cos(t) - 1.0), dy = lr * sin(t);
    if (dx * dx + dy * dy > dd) t0 = t;
    else t1 = t;
  }
  //printf("t0=%lf\n", t0);

  double th = PI2 + t0;
  double r0 = lr - sr, r1 = lr + sr;
  double s = PI * (r1 * r1 - r0 * r0) * th / PI2 + PI * sr * sr;
  printf("%.10lf\n%.10lf\n", th, s);
  return 0;
}