Answer:
30.84
Step-by-step explanation:
in order to find the perimeter you multiply 2 by pi (3.14) then multiply that answer by the radius which is 6. Then divide that answer by 2 since the shape is a semi circle then add the diameter (12) to that answer and you get 30.84.
2 * 3.14 * 6 / 2 + 12 = 30.84
