$\"\"$

The perimeter P of a rectangle is given by the formula $\"\"$

Where a is length and b is width of the rectangle.

$\"\"$

The perimeter P of the rectangle is

$\"\"$ (Substitute $\"\"$ )

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

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

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