### How Many Molds From 80 lbs - The Mold Store

To get the approximate yield from the 80 lb. bag of premix concrete you multiply the 1728 square inches times .6 (cubic feet) which equals 1036.8 cubic inches. To see how many 12x12x1/2 tiles you can make from that bag of concrete you divide the total of 12x12x.5 which equals 72 square inches.

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