#include<stdio.h>
int main()
{
    int length,bredth,double radius;
    scanf("%d",&length);
    scanf("%d",&bredth);
    scanf("%lf",&radius);
    int rec_area=length*bredth;
    double circle_area=3.14*radius*radius
    printf("%d\n"rec_area);
    printf("%.2lf\n",circle_area);
    
    return 0;
}