That's the period at the end of the sentence written in
million-point font across the Sahara.
(It's an ad placed there by McDonald's to attract the
18-30 alien demographic.)
So the problem ask to find and convert the area into square meters. So to convert is you must do the cross multiplication process that could cancel out unit and made the answer into a square meter, so the answer would be 1. x10^-12m^2. I hope you are satisfied with my answer and feel free to ask for more