Answer:
800cm cubed
Explanation:
I will go through all my steps but this is (fairly) hard to explain.
In a nutshell, to calculate the volume of a shape like this we can split it up into various other shapes that we can calculate the volume for.
For example, I will do the small step at the bottom, excluding the main chunk.
10 subtract 4 is 6
6 multiplied by 5 multiplied by 8 is 240
Now I can do the rest of the shape:
12 subtract 5 is 7
7 multiplied by 10 multiplied by 8 is 560
Now we add our two separate volumes together
240 plus 560 is 800
800cm cubed is our volume.