Calculating Downforce

The calculation above can be used to work out the downforce of a race car wing.

What is the function of the . though?

(PS: Not a maths student at all! Just love F1 and want to understand fully the phrase "Downforce squares with speed")

Thanks

. means multiplication , see this list on Wiki: http://en.wikipedia.org/wiki/List_of_mathematical_symbols

I thought it did. Thanks for clearing that up for me.