diff --git a/陈张本-26020007010-912523257.py b/陈张本-26020007010-912523257.py
index aa3fc2c..4d137a2 100644
--- a/陈张本-26020007010-912523257.py
+++ b/陈张本-26020007010-912523257.py
@@ -3,4 +3,7 @@ class Shape:
         return 0
 class Circle(Shape):
     def __init__(self, radius):
-        self.radius = radius
\ No newline at end of file
+        self.radius = radius
+
+    def area(self):
+        return math.pi * self.radius * self.radius
\ No newline at end of file