diff --git a/.idea/misc.xml b/.idea/misc.xml
index d15472f..045943f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_18" default="true" project-jdk-name="openjdk-18" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_20" default="true" project-jdk-name="openjdk-18" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/ArchimedesPiMethod.java b/src/ArchimedesPiMethod.java
index 0b6e780..d943592 100644
--- a/src/ArchimedesPiMethod.java
+++ b/src/ArchimedesPiMethod.java
@@ -1,7 +1,23 @@
+
 import java.util.Scanner;
 
 public class ArchimedesPiMethod {
     public static void main(String[] args) {
+        while(true) {
+            System.out.println("please type the number of sides.");
+            Scanner sc = new Scanner(System.in);
+            int n = sc.nextInt();
+            if(n < 1) {
+                break;
+            }
+            double b = 360.0/n;
+            double a = b / 2;
+            double s = 2 * Math.sin(Math.toRadians(a));
+            double p = n * s;
+            double pi = p / 2;
+            System.out.printf("our PI estimate is: %.10f%n", pi );
+        }
+
 
     }
 }