Area of circle

 #include <stdio.h>


int main()

{

   // declaring the variables radius and area

   float radius, area;


   // initializing the value of pi

   float pi = 22.0 / 7.0;


   // taking the user input

   printf("Enter the radius of the circle: ");

   scanf("%f", &radius); 


   // calculating the area

   area = pi * radius * radius;


   // printing the area

   printf("The area of the circle is %f", area);


   return 0;

}

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