text: This is c program that asks user to find out the Area of a circle. User need to declare the math function header file for calculation along with required variables like radius or area. User asks to enter radius of a circle for find out the area. User then uses the method to find out the area of a circle. Then too display result on the screen as result.
  Problem Statement:
  This is C program that ask user to find out the area of a circle.
  - Declare the variables.
  - Using method for area of circle.
  - Display result on the screen.
  Formula to area of circle.
  “pi*r*r” (pi=3.14)
  Here is C source code to find out the area of circle. The output of this program shown below.
  #include <stdio.h>
  main( )
  {
  float radius, area;
  printf ("Radius = ? “ ) ;
  scanf ( "%f" , &radius) ;
  area = 3.14159 * radius * radius;
  printf ("Area = %f",area) ;
  }