# Trying to solve beecrowd 1001 problems. But receiving wrong answer message!!

22 views

### Khandokar Faisal Islam

Jun 14, 2022, 2:52:46 AMJun 14
to Dart Misc

### Jacob Bang

Jun 14, 2022, 3:01:00 AMJun 14
to mi...@dartlang.org
Please don't post code as only screenshot since it makes it rather annoying for us to try reproduce your issue.

Also, please describe what answer you are getting and what answer you was expecting. Also what input you have provided since we can't see that.

Den tir. 14. jun. 2022 kl. 08.52 skrev Khandokar Faisal Islam <faisa...@gmail.com>:

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Jacob Bang / julemand101

### Khandokar Faisal Islam

Jun 14, 2022, 5:39:56 AMJun 14
to Dart Misc, julem...@gmail.com
I was trying to solve this problem with dart program

The formula to calculate the area of a circumference is defined as A = π . R2. Considering to this problem that π = 3.14159:

Calculate the area using the formula given in the problem description.

Input

The input contains a value of floating point (double precision), that is the variable R.

Output

Present the message "A=" followed by the value of the variable, as in the example bellow, with four places after the decimal point. Use all double precision variables. Like all the problems, don't forget to print the end of line after the result, otherwise you will receive "Presentation Error".

Here is my code:

import 'dart:io';
import 'dart:core';

import 'dart:math';

void main() {
double n = 3.14159;
double A = n * (pow(R, 2));
print("A= \${(A).toStringAsFixed(4)}");
}

### Jacob Bang

Jun 14, 2022, 6:48:03 AMJun 14
to Khandokar Faisal Islam, Dart Misc
Forgot to answer the group. But the solution was to remove the extra
space added by accident after "=" in the generated output:

import 'dart:io';
import 'dart:core';

import 'dart:math';

void main() {