13. What is the probability to win the game

David playing a game with his friends, in which the stone thrown by them landing in a circular region (given in the figure) is considered as win and landing other than the circular region is considered as loss. If the value of \(x = 7\) feet and (y = 4\) feet, what is the probability to win the game?

 

 

 

• $\frac{2800}{314}$
• $\frac{3.14}{2800}$
• $\frac{314}{2800}$
• $\frac{314}{2921}$