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