About 1.2 square feet x 63 tiles
The best way to figure out how many 13x13 tile will be needed to cover 30 sf of floor is to calculate 13x13/144 give coverage per tile (1.1736), then take 30/1.736 = 25.56 tiles.
190
It will require a minimum of 1,462 tiles. That number will cover about 1,850.34 square feet.
90 tiles.
Approximately 69 Square Feet.
20
16 square feet with less than one square foot of tile remaining
About 1.2 square feet x 63 tiles
You will need approximately 23.4 tiles, so 24 tiles. Assuming 13x13 tiles is in inches.
One 13 ft x 13 ft tile covers 169 square feet, so 2 will be enough.
the dimensions of one tile is 13x13 inches or 1.083x1.083 feet. Therefore area of one tile is 1.1736 square feet and that of 196 tiles is 196x1.1736=230.027
13'x13' = 169 square feet
184 would do it but get 185.
The best way to figure out how many 13x13 tile will be needed to cover 30 sf of floor is to calculate 13x13/144 give coverage per tile (1.1736), then take 30/1.736 = 25.56 tiles.
13 x 13 (assumed inches) is 13/12 feet x 13/12 feet, so the area of one tile is 169/144 square feet. To cover 100 square feet you need (100)/(169/144) tiles which works out to (100 x 144)/169 = 14400/169 = 85.2, make it 86 tiles
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.