9,216 tiles, this is how I worked it out
64 sq feet = 589,824 sq inches
8" x 8" tile = 64 sq inches
589,824 divided by 64 = 9,216
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The first contributor's arithmetic and writing are both impeccable.
Unfortunately, instead of an area of "64 square feet", he used a 64-foot square.
64 square feet = (64 x 144) = 9,216 square inches.
Each tile = (8 x 8) = 64 square inches
Number if tiles = (9,216/64) = 144 tiles.
Assuming no gap, grout, etc.
It is not clear what is meant by an "18x18 square feet" tile. 18ft * 18 ft = 324 square feet, so that one tile will be more than enough. An 18 inch by 18 inch tile cannot be a 18x18 square feet tile.
10
abswer is 6.9218 square feet
As 8 feet x 8 feet = 64 square feet it will only take one 8 feet by 8 feet tile to cover 64 square feet.
18 inch x 18 inch tile is really (1 and 1/2) feet by (1 and 1/2) feet That is (3/2) x(3/2) square feet = 9/4 square feet. To cover 900 square feet we need (900)/(9/4) = (900) x (4/9) = 100 x 4 = 400 tiles
It is not clear what is meant by an "18x18 square feet" tile. 18ft * 18 ft = 324 square feet, so that one tile will be more than enough. An 18 inch by 18 inch tile cannot be a 18x18 square feet tile.
10
abswer is 6.9218 square feet
1.8
1/144 of square foot
As 8 feet x 8 feet = 64 square feet it will only take one 8 feet by 8 feet tile to cover 64 square feet.
18 inch x 18 inch tile is really (1 and 1/2) feet by (1 and 1/2) feet That is (3/2) x(3/2) square feet = 9/4 square feet. To cover 900 square feet we need (900)/(9/4) = (900) x (4/9) = 100 x 4 = 400 tiles
1.78 square feet.
It will cover an area of approximately 408.33 square feet.
5,184 2-square-inch tiles are needed.
440 6-inch square tiles.
297 16x16-inch tiles.