ANSWER
The perimeter is 12 inches.
EXPLANATION
The formula for calculating the perimeter of a square is

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
3x2+4(-1)-2(5)2 +4(5)+5=
__________________
6+-4-10+25
_________
31-14=17
The correct answer is number one, number four, and number five. Please park Brainliest if helpful. Thanks