#include <stdio.h>
#define PI 3.14
int main ()
{ float r=0; float cir=0; float area=0; printf("please into put a radius."); scanf("%f",&r); cir =2*PI*r; area =PI*r*r; printf("%0.2f\n",cir); printf("%0.2f\n",area); printf("please into put second radius."); scanf("%f",&r); cir =2*PI*r; area =PI*r*r; printf("%0.2f\n",cir); printf("%0.2f\n",area);
printf("please into put third radius."); scanf("%f",&r); cir =2*PI*r; area =PI*r*r; printf("%0.2f\n",cir); printf("%0.2f\n",area);