diff --git a/Taschenrechner.java b/Taschenrechner.java
index 6b4c6a6..0b70fd1 100644
--- a/Taschenrechner.java
+++ b/Taschenrechner.java
@@ -134,6 +134,13 @@ public class Taschenrechner {
 			
 			break;
 		}
+		case 9:{
+			System.out.println("Pi\n");
+			
+			System.out.println("Ergebnis:" + pie());
+			
+			break;
+		}
 		default:
 			throw new IllegalArgumentException("Unexpected value: " + s);
 		}