paint my chessboard rm! the appropriate size of the squares?

my room is 121.5 inches by 130 inches .. how big the squares should I do?

that can make 12by12 inch squares.

Big Squares (Row 2 of 2) – Learn how to Crochet

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Oxo 2.4 QT, Pop, Big Square Food Storage Container $9.99

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1pc Fashioh Big Vintage Square Ring 2-Color High Quality Free Shipping $3.99

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