#include <stdio.h>

int main() {
    double r;
    if (scanf("%lf", &r) != 1) return 0;

    const double pi = 3.141592653589793;
    double area = pi * r * r;                      // circle area
    double volume = (4.0 / 3.0) * pi * r * r * r;  // sphere volume

    printf("%.2f\n", area);
    printf("%.2f\n", volume);