Pattern: Alternatives Required pavers or concrete stones per 100 sq. ft. 27 pcs. - 18″ x 18″ - 60% 27 pcs. - 12″ x 18″ - 40% or 67 pcs. -12″ x 12″ - 67% 66 pcs. - 6″ x 12″ - 33% Level Of Difficulty: Easy Back