BD Flag

#include <stdio.h>
#include <math.h>
int main(){
    int t,i,x;
    float green, red,y,r;
    scanf("%d",&t);
    for(i=0;i<t;i++){
        scanf("%d",&x);
        y = x*3/5.0 ;
        r = x/5.0 ;
        red = 3.1416 * pow(r,2) ;
        green = (x*y) - red ;
        printf("%.2f %.2f\n",red,green);
    }

    return 0 ;

}