1 square ft= 144 square inch
24 inches = 2 ft 30 inches = 2.5 ft 2 ft x 2.5 ft = 5 square feet.
A square 20-inch tile is 2.78 square feet.
28.26 sq in 196 sq ft
A 12 inch by 12 inch tile is 1 ft by 1 ft, which is 1 square foot. So you would need 120 tiles.
2.007 sq ft
(13 ft 3 inches) x (13 ft 9 inches) is approximately 16.93 square meters.
A 12 inch square block is a sq ft, so 208.
0.76 sq ft.
28 inch square
18 inches is 1.5 ft and so 1.5 times 1.5 = 2.25 square ft
Nine square feet is equal to 3.24 20-inch tiles.