Answer:
Volume is LxWxH so you will first do the bigger cube. count the squares you see for length, width, and hieght on the first cube so that will be:
10x9x5 which equals 450. Now we go to the cube that is on the bottom right that is attached to the other cube that is 450. Now we do the same with that.
5x9x2. And the volume for that will be 90.
Since we just figured out these cubes, we add these two together
450+90=540
The answer is 540. Have a great day, and i hope this helped :)