An automobile manufacturer produces 28% of its cars at plant a. if 6% of the cars manufactured at plant a have defective emissions control devices, what is the probability that one of this manufacturer's cars was manufactured at plant a and has a defective emissions control device?

C) 113 1/4

Step-by-step explanation:When you do perimeter you do length plus length  plus width plus width.So the Length is 31 1/8  and  the width is 25 1/2 ,so you do 31 1/8 and add it to 31 1/8 which gives you 62.25 or 62 1/4 .Now you add  25 1/2 to  25 1/2 which gives you 51.After that you add 62 1/4 to 51 which gives you 113 1/4.

Hope it helps.