<html><body><div style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div abp="130"><stagecraft@theatrical.net> wrote:<br abp="149">> So for an ellipse with a size of 10 x 8 the focus is:<br abp="150">><br abp="151">> Sqrt(5^ - 4^2) = Sqrt(25 - 16) = Sqrt(9) = 3<br abp="152">><br abp="153">> And the string is<br abp="154">><br abp="155">> 2*(5+3) = 16<br abp="156"><br abp="157">"I was told there would be no math..."<br abp="158"><br abp="159"><br abp="160"> No worries. You've just seen how easy it is to get someone else to do it for you.</div></div></body></html>