Before seeing this uri 1002 solution make sure that you have tried enough(at least 30 minutes).Please do not copy this code. I request you to understand the logic and then write your code. If you do not feel your code then you are not on the right path. Happy coding.

Question of uri area of a circle :

uri 1002

Solution of uri 1002 :

#include <stdio.h>
int main()
double A,R,P;
return 0;

If you can not understand this solution or if you need any other help please feel free to ask me on comment . I will try my level best to help you .