Help me in solving RCPITCP31 problem

help
,
1

My issue

Please my compar error issue always solved

My code

// Complete the code by updating the uderscores(__)
#include <stdio.h>

int main() 
{
     double radius=3.14;
     double area=pi
    printf("", 8.9);
    scanf("%f",radius);
    area=3.14*radius*;
     return 0;
}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC05/problems/RCPITCP31
Please help