6. Determine the perimeter after adding a shape

A right triangle is attached to the rectangle. The values of the sides of the given figure are $a=$ 4 $cm$, $b=$ 4 $cm$, $c=$ 11 $cm$, $d=$ 4 $cm$, $e=$ 8 $cm$ and $f=$ 5 $cm$. Find the perimeter of the given shape.

 

 

The perimeter of the given shape is  $sq. cm$.