$\"\"$ \ \

The perimeter is the distance around figure.

The perimeter of the rectangle is the double of sum of the length and width.

$\"\"$

The perimeter of the square is $\"\"$ \ \ $\"\"$

$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

$\"\"$ (Add: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ ) $\"\"$ \ \

The perimeter of the rectangle is $\"\"$ m.