Help me in solving CLB026 problem

My issue

i have written the right program but in the output it is showing wrong answer

My code

#include <stdio.h>

int main(void) {
	double pi=3.14;
	double radius=8.9;
	double area=pi* (radius * radius);
	printf("The area of given circle is %f",area);
	return 0;

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

format specifier of double is “lf” change it.