diff --git a/python/circle area.py b/python/circle area.py
index 81e4515..4b4bfd7 100644
--- a/python/circle area.py	
+++ b/python/circle area.py	
@@ -1,5 +1,6 @@
+from math import pi as PI
 r=int(input("enter the radius of circle:"))
-area=22/7*r*r
-perimeter=2*22/7*r
+area=PI*r*r
+perimeter=2*PI*r
 print("area of circle is : ", area)
-print("perimeter of circle is : ", perimeter)
\ No newline at end of file
+print("perimeter of circle is : ", perimeter)