help with percentage of each of the tiles 20 x 20, 11 x 22 and 12 x 12
210 tiles
It depends on the size of the tile. Tiles come in many different sizes. They are generally sold though by the square foot. The general rule goes that for every tile floor you will have around 10% waste. Meaning that you will need 100 tile for the floor and 10 more for cuts and breaks you might have. When you buy these tiles, tell the sales person you need 110 square feet and this already includes waste.
You would need 450 tiles
4
16 square tiles
You will need approx 130 sq ft of tiles. Divide the tile dimension into the total to figure out the quantity. Allow for breakage/spoilage. Tile squares come in many sizes.
If these are one inch tiles you need 2160. If the tiles are 12 inch tiles you need 180.
85.5 tiles but now add for cutting based on room size and shape.
That of course would depend on the size on the tile you have. It is not hard, but you will need a little savvy and based on your question on the number of tiles i think you might be in over your head.
To lay pool tiles, you will need mortar to affix the tiles to the cement pool, you will also need grout for between the tiles and a sponge to clean the tiles.
210 tiles
It depends on the size of the tile. Tiles come in many different sizes. They are generally sold though by the square foot. The general rule goes that for every tile floor you will have around 10% waste. Meaning that you will need 100 tile for the floor and 10 more for cuts and breaks you might have. When you buy these tiles, tell the sales person you need 110 square feet and this already includes waste.
You need 27 Box of 9 tiles
You would need 450 tiles
4
you probably might need 126 tiles for that
16 square tiles