Answer: 166.5 inch.
Step-by-step explanation:
There are a lot of steps to this. First of all, as seen in the picture below, we split the shape into a triangle and a rectangle. We can first find the area of the triangle first, which would be:
= 22.5 inch.
Next, using the pythagoras theorem, we can find the missing side of the triangle. So, we do:

Now we have that side, we can calculate the area of the rectangle, which would be 16 x 9 = 144 inch.
So now we can add both areas:
144 + 22.5 = 166.5 inch.