please explain how to get answer

What does the label display when the user click the button? private void btnSubmit_Click(object sender, EventArgs e) double num1 = 5; double num2 = 12; double num3; num3 = myProc(numi, num2); lblResult.Text = Convert.ToString(num3); double myProc(double numPari, double numPar2) { return Math.Sqrt(Math.Pow(numPari, 2.0) + Math.PowCnumpar 2, 2.0))