Hello,

I'm attempting to exactly pack smaller circles around a larger circle, and to get the radius of the outer circle I found this formula online with explanation:

http://mathforum.org/library/drmath/view/63736.html

When I enter this formula in a calculator I get a proper numerical result, however when I start the circle command in MoI and enter the formula this way for example, where I want to get the radius of ten small circles around the larger center circle with a radius of 20:

20 sin(180/10)/(1 - sin(180/10))

I get no result. Is this just a matter of syntax not being correct? There is still some manual labor required to place the smaller circles around the larger one, but that is simply a matter for the Circular Array since the formula solves for the number of specified circles. Thanks.