diff --git a/陈安-26020007005-261067224.py b/陈安-26020007005-261067224.py
index d80bdbc..9400ab9 100644
--- a/陈安-26020007005-261067224.py
+++ b/陈安-26020007005-261067224.py
@@ -1,3 +1,9 @@
 class Shape:
     def area(self):
-        return 0
\ No newline at end of file
+        return 0
+
+class Circle(area):
+    def __init__(self, r):
+        self.r = r
+    def area(self):
+        return 3.14 * self.r * self.r
\ No newline at end of file