#include<stdio.h>
int main()
{
    int length, breadth;
    double radius;
    scanf("%d", &length);
    scanf("%d", &breadth);
    scanf("%lf", & radius);
    int rect_area=length*breadth;
    double circle_area=radius*radius*3.1.14;
    
    printf("%d\n",rect_area);
    printf("%.2lf\n",circle_area);
    
    return 0;
}