Help me in solving PPSC16 problem

help
,
1

My issue

answer is correct but still getting wrong answer

My code

#include <stdio.h>

int main(void) {
    float radius = 8.9, pi = 3.14, area;
    area = pi * radius * radius;
    printf("The Area of the given Circle is %f\n", area);
    return(0);

}

Learning course: CSEIPFOIA: Programming and Problem Solving
Problem Link: Double datatype Practice Problem in CSEIPFOIA: Programming and Problem Solving - CodeChef