#include<stdio.h>
#import<math.h>
int main()
{
    int length,breadth,rect;
    float radius,cir;
    double pii=3.1415;
    scanf("%d",&length);
    scanf("%d",&breadth);
    scanf("%f",&radius);
    rect=(length*breadth);
    cir=(math.pi*(radius*radius));
    
    printf("%d",rect);
    printf("\n%.2f",cir);
    return 0;
}