1. Find the perimeter

 

The values of the sides of the above figure are $a =$ 5 $cm$, $b =$ 5 $cm$, $c =$ 1 $cm$, $d =$ 7 $cm$, $e =$ 3 $cm$, $f =$ 7 $cm$ and $g =$ 1 $cm$. Calculate the perimeter of the combined shape.

 

The perimeter of the combined shape $=$  $cm$