The product of 18 multiplied by 18 is 324. This calculation involves multiplying the two numbers together using the standard multiplication algorithm. In this case, you would multiply 8 (the units digit of the first number) by 18, which equals 144, and then proceed to multiply 10 (the tens digit of the first number) by 18 and add the result to 144 to get the final answer of 324.
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Depends on how many are in each box?
The diagonal of an 18x18 tile is 18*sqrt(2) = 25.46 units.
18 squared is 324 182=324
102.22 tiles because each tile is 2.25 sq.ft. 230 / 2.25 =102.22 so really 103 tiles.
It depends on the units used for measuring the tiles. Obviously, the number of 18 inch x 18 inch tiles required will not be the same as 18 cm x 18 cm tiles. And if there were 18 yard x 18 yard tiles, you would need only 1.