title: How to show the answer once the answer is over 2 decimal places
body: <p>I have a Visual Basic calculator that calculates the volume of a cone.</p>
  
  <p>I have two answers, one in mm cube and the other in meters cubed (which is rounded to nearest hundredth (2 decimal places)). But I only want to show the meters cubed once it reaches 0.01 or higher.</p>
  
  <p>Here is my calculation code</p>
  
  <pre><code>Private Sub txtSidea_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtHeight.Leave, txtRadius.Leave
      'calculate volume cubic mm using V= 1/3 pi R*2*H  
      Const PI As Double = System.Math.PI
      lbAnswerlVolumeMM.Text = (1 / 3 * PI * ((Val(txtRadius.Text) ^ 2) * Val(txtHeight.Text))).ToString("#") + " :Cuibic mm"
      'calculate volume cubic meter using V= 1/3 pi R*2*H / 10^9
      lblAnswerVolumeMetres.Text = ((1 / 3 * PI * ((Val(txtRadius.Text) ^ 2) * Val(txtHeight.Text))) / 10 ^ 9).ToString("#.##") + " :Cubic Metre"
  End Sub
  </code></pre>
  
  <p>An example would be; Height 50mm and radius 30mm. which would output 47124 mm cube which is good. But it displays nothing for the metres cube, So if the answer is under 0.01 for metres cube i would like it to hide the label until it was over 0.01 and then display the result.</p>