18 x 28 = 504. 504 / 144 = 3.5
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∙ 2016-06-20 08:10:222.78 square feet.
2.77 square feet.
You will need a minimum of 136 18" x 18" tiles but buy a few extra to account for breakage, etc.
2.25 square feet.
3.5555 square feet.
1.7689
4.694 square feet.
40 square feet.
There are 144 18 square inch tiles in an area of 18 square feet.
Approximately 179.17 square feet.
Approximately 222.54 square feet.
Approximately 122.28 square feet.