$\"\"$

The measurement of the side of a square floor tile is $\"\"$ with a possible error of $\"\"$ .

The area of a square floor is $\"\"$ , where $\"\"$ is area and $\"\"$ is $\"\"$ .

Since error given is possible error, consider $\"\"$ .

$\"\"$

Subustiute the values of $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

The possible propogated error in computing the area of the square is $\"\"$ .