#include<stdio.h>
int main(){
    int length,breadth;
    float radius;
   scanf("%d\n",&length);
   scanf("%d\n",&breadth);
   scanf(".%f\n",&radius);
   int area_of_rec=length*breadth;
   float area_of_cir=3.14*(radius**2);
   printf("%d\n",area_of_rec);
   printf(".2%f\n",area_of_cir);
   return 0;
}