#include<stdio.h>

int main(){
    int length,breadth;
    double radius;
    const double PI=3.14;
    
    scanf("%d",&length);
    scanf("%d",&breadth);
    scanf("%if",&radius);
    
    rectArea =length*breadth;
    cicleArea =PI*radius*radius;
    
    printf("%d\n",(int)rectArea);
    printf("%2f",cicleArea);
    
    return 0;
}