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ANSWER

The perimeter is 12 inches.

EXPLANATION

The formula for calculating the perimeter of a square is

[tex]P=4l[/tex]

Since the magnet is in the form of a square, we can use this formula to find the perimeter of the magnet.

It was given that, each side of the magnet is 3 inches long.

Hence, we have l=3 inches.

We have to substitute l=3 into the formula and simplify.

The perimeter is

[tex]P=4 \times 3= 12in.[/tex]

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