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December 21, 2014

December 21, 2014

Posted by **jan** on Wednesday, March 28, 2012 at 8:31am.

- math -
**Reiny**, Wednesday, March 28, 2012 at 8:39amA tile 4 inches square is 4 inches by 4 inches for an area of 16 square inches

or 1/3 ft by 1/3 ft for an area of 1/9 square feet

area of roof = 144 square feet

number of tiles = 144/(1/9) = 1296

or

number of square inches in 144 square feet

= 144(144) = 20736

number of tiles = 20736/16 = 1296

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