$\"\"$

Observe the figure:

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

Here, length of rectangle is $\"\"$ and width is $\"\"$ .

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

$\"\"$ (Apply commutative property of addition: $\"\"$ )

$\"\"$ (Add)

$\"\"$ (Simplify)

Therefore, the perimeter of the rectangle is $\"\"$

$\"\"$

Option G is right choice.