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# Need help with is your math correct in challenge.

Can't find reason why saying is your math correct,can some one have look in my code please ,thank you in advance.would be great help.

RightTriangle.cs
```namespace Treehouse.CodeChallenges
{
class RightTriangle
{
private static double a;
private static double b;
private static double c;

public static double CalculateHypotenuse(double a , double b)
{
c = System.Math.Pow(c,2);
return c = System.Math.Pow(a,2) + System.Math.Pow(b,2);
}
}
}
```

I'm not sure what you were tasked to do but just from the initial overview, your method should just do the calculation, it should not set the class variable c. By removing the initialization of c (which is the class variable since the variable is not a parameter), and just returning the actual calculation should clean this method up and give you the proper calculation. If the class variables need to be initialized, then best practice is to use that in a constructor, you should be able to set a & b and use the calculation for c.

```        public static double CalculateHypotenuse(double a , double b)
{
return System.Math.Sqrt(System.Math.Pow(a,2) + System.Math.Pow(b,2));
}
```