progarm to find area,radius and circumference

#include<stdio.h>

int main()
{
  float len,breth,radius,area1,p,area2,circum;
 
  printf("Enter lenth of rectangle:");
  scanf("%f",&len);
  printf("enter breath of rectangle:");
  scanf("%f",&breth);
  printf("enter radius of circle:");
  scanf("%f",&radius);
 
      area1=len*breth;
      printf("areq of rectangle=%f \n",area1);
      p=2*(len+breth);
      printf("perimeter of rectangle=%f\n",p);
     
      area2=3.14*radius*radius;
      printf("area of radius =%f\n",area2);
     
      circum=2*3.14*radius;
      printf("circumference of circle=%f",circum);
   
  return 0;   
   
}