Answer:
See Explanation
Explanation:
The question is incomplete, as the image of the polygon is not given.
I will answer this question with the attached image (similar to your question)
The attached polygon is a trapezoid of the following dimensions.
![Height = 4ft](https://img.qammunity.org/2022/formulas/geography/high-school/nv720ev7y50mdakleg44mmypikmm3gyq2l.png)
Parallel sides
![Side\ 1 = 4ft](https://img.qammunity.org/2022/formulas/mathematics/college/lkhiq0yuc99jcbeoe24y5x0j11nzgoj54c.png)
![Side\ 2 = 4ft+1ft = 5ft](https://img.qammunity.org/2022/formulas/mathematics/college/4seop8h3no9vcgii1tqb2fds45zz8xwoll.png)
So, the area is:
![Area = (1)/(2) * (Side\ 1 + Side\ 2) * Height](https://img.qammunity.org/2022/formulas/mathematics/college/op1pxsqy5oghc81dmvc8h14tlcdmavok78.png)
![Area = (1)/(2) * (4ft + 5ft) * 4ft](https://img.qammunity.org/2022/formulas/mathematics/college/ibvygxdg1vs76jrowgttorvj9p7d6dwzkr.png)
![Area = (1)/(2) * 9ft * 4ft](https://img.qammunity.org/2022/formulas/mathematics/college/ir0sahj1brfdnr0ox1060p516vsv7sbpb5.png)
![Area = 18ft^2](https://img.qammunity.org/2022/formulas/mathematics/college/5b2erp3jww34o5l5ts5kppe0ewtbpktokt.png)