URI Online Judge | 1002 Area of a Circle

Problem Link : 1002 Area of a Circle

Solution :
      Develop by Samsus Salehin Sabbir 

1. #include <stdio.h>
2. 
   
3. int main(void) {
4. // your code goes here
5. double A,R;
6. scanf("%lf",&R);
7. A=3.14159*R*R;
8. printf("A=%.4lf\n",A);
9. return 0;
10. }