An algorithm to find area and circumference of the Circle.

  1. START
  2. Input Radius of Circle as R
  3. Assign Value of PI = 3.14
  4. Calculate Area= PI * R * R
  5. Calculate Circumference Circum= 2 * PI * R
  6. Print Value of Area and Circum
  7. END / STOP 

Flowchart to find area and circumference of the Circle.

C-Code to find area and circumference of the Circle.

#include<stdio.h>
void main()
{
float r,area,circum,pi=3.14;
printf("Enter Radius of circle :  ");
scanf("%f",&r);
area= pi*r*r;
circum= 2*pi*r;
printf("\n The Area of circle is  : %.2f and circumference is : %.2f ", area,circum);
}