Sharepoint calculated column syntax error

[Concrete]

Hi,

I have these number columns in my sharepoint list: Rib_height, Diameter, Part_of_circumference_without_ribs, Rib_spacing.

I have created calculated column but I'm getting syntax error on the formula:

=(2*[Rib_height]*(3,14*[Diameter]-[Part_of_circumference_without_ribs]))/(3*3,14*[Diameter]*[Rib_spacing])

Can't figure it out where is the mistake? Any ideas?

Thanks

[mdevaney]

@Concrete 

Looks fine to me.  What you should do is keep adding/removing sections of code until you find the problem area.

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