Answer:
Option D. 50 ft
Step-by-step explanation:
we know that
The area of the figure is equal to the area of three rectangles
so


Remember that the area is given

so

solve for x

So what is your question cause there isn't one
256×7=
(200×7)+(50×7)+(6×7)=
1400+350+42=
1792
I would say the width is 7 without having a picture.