Help me in solving PYTH25 problem

My issue

Why i can not submit my code

My code

# Update your code below this line

 radius = 8.9 
 pi = 3.14
 
 area= pi * (radius * radius)
 
 print(area)

Learning course: Learn Python
Problem Link: CodeChef: Practical coding for everyone

@rajlaxmi_sk3
Plzz retry it cozz its working fine for me.