#include<stdio.h>
int main()
{
    int length,breadth;
    double r;
    scanf("%d",&length);
    scanf("%d",&breadth);
    scanf("%lf",&radius);
    int rectangle_area=l*b;
    double circle_area=3.14159*r*r;
    printf("%d\n",rectangle_area);
    printf("%.2f",circle_area);
    return 0;
}