Answer:
830 yd
Explanation:
Theres a few ways you can do this but I'll show you one of the easeist way for solving this problem.
You can slipt this figure into 2 rectangles by just cutting the small rectangle out (the one thats kind of sticking out)
Then, all you have to do is find the area of both rectangles and add them together.
For the big rectangle : 20x40 = 800
For the little rectangle : 30x10 = 30
Add all togther:
800 + 30 = 830 yd
Hope this helps :)