Do you mean that you yourself have many unanswered questions, or that there's a lot of unanswered questions on the site. Because the second one is just a teeny bit obvious!
It's spelled pi, not pie, and the value is 3.14. As i think you know, the value of pi extends for infinity, or at least it would if there is an infinity, and the numbers never repeat. But most things just want 3.14
+53 
