Each trapezoid in the figure below is congruent to trapezoid abdc.

4 trapezoids are connected. trapezoid a b c d is connected to trapezoid b d g h at side b d. another trapezoid is on top of trapezoid a b c d and connects at side c d. another trapezoid is on top of trapezoid b d g h and connects at side d g. the length of side c a is 3 centimeters, the length of a b is 4 centimeters, and the length of side c d is 6 centimeters.

what is the perimeter of hexagon acefgh?

28 cm
32 cm
36 cm
64 cm