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