720 4"x 8" tiles are needed.
810
4 square feet are needed
Assuming they are 8 inch*16 inch blocks, 144 square feet = 144*12*12 square inches. So number of blocks required = 144*12*12/(8*16) = 162
5,184 2-square-inch tiles are needed.
132
I think perhaps 2250 blocks .
64
810
More information is needed EG what type of 12 inch blocks there are many(see link below). Also what way up are you using these blocks. http://www.boralbestblock.com/product-lines/masonry/standard-block/12-inch-block
4 square feet are needed
Assuming they are 8 inch*16 inch blocks, 144 square feet = 144*12*12 square inches. So number of blocks required = 144*12*12/(8*16) = 162
5,184 2-square-inch tiles are needed.
132
288 6-inch tiles are needed.
236 18-inch tiles.
Floor area = 12 ft x 18 ft = 216 square feet. There are 4 six-inch square tiles needed for each square foot, so 864 tiles are needed.
968