C Program To Find Area And Circumference Of Circle

Circumference :-Circumference of circle is the distance around the circle. Calculate The Circumference of Circle By Given Formula

Circumference = 2*π*r    

Here PI (π) is a Greek Letter and r is a Radius (1/2 Of Diameter )

PI (π) = 3.141592653589793 Approx. It Is A Constant Value for more about Circumference Click Here

Area   =π *r*r

For more about Area Of Circle Click Here 

See Also :-C++ Program To Find Area And Circumference Of Circle

Solution :-

#include<stdio.h>
int main()
{
   /*Program By Ghanendra Yadav
   Visit http://www.programmingwithbasics.com/
  */
   int rad;
   float PI = 3.14, area, ci;

   printf("\nEnter radius of circle: ");
   scanf("%d", &rad);

   area = PI * rad * rad;
   printf("\nArea of circle : %f ", area);

   ci = 2 * PI * rad;
   printf("\nCircumference : %f ", ci);

   return (0);
}

See Also :-JAVA Program To Find Area And Circumference Of Circle

Output:-