IO 11

Description:

Write a program to calculate area of a circle Input and Output Format: Refer sample input and output for formatting specification. All float values are displayed correct to 2 decimal places. All text in bold corresponds to input and the rest corresponds to output. Test Case 1 Input (stdin) 2 Expected Output Area of Circle=12.560000 Area of Circle=12.56 Test Case 2 Input (stdin) 25 Expected Output Area of Circle=1962.500000 Area of Circle=1962.50

Program :


#include <stdio.h>

int main()

{

float a,area;

  scanf ("%f",&a);

  area=3.14*a*a;

  printf ("Area of Circle=%0.6f",area);

  printf ("\nArea of Circle=%0.2f",area);  

return 0;

}