<PRE><B>Question 368824</B>
To solve this, start with 1 diameter. &lt;br&gt;

1 diameter makes 2 sections.&lt;br&gt;

2 diameters makes 4 sections.&lt;br&gt;

3 diameters makes 6 sections.&lt;br&gt;

4 diamters makes 8 sections.&lt;br&gt;

5 diameters makes 10 sections.&lt;br&gt;

Do you see the pattern?&lt;br&gt;

x diameters makes 2*x sections, so&lt;br&gt;

&lt;b&gt;10 diameters makes 20 sections.&lt;/b&gt;&lt;br&gt;

I hope this helps!&lt;br&gt;</PRE>