# Area of circle

Area of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circleArea of circle

```
#include <stdio.h>
float pi = 3.14;
int
main ()
{
float r, A;
printf ("Enter radius in m ");
scanf ("%f", &r);
A = pi * r * r;
printf ("The area of circle having radius %f is %f meter square", r, A);
}
```