How many unit cubes need to be added to the figure so that it will have a total
volume of 12 cubic units?

Answer:
c. 4
Step-by-step explanation:
see how many cubes are already there. Then, subtract that answe from 12 to get how many you need.
Answer:
Count the units in total shown here:
There are 2 units both in the back and front.
So double of 2 means 4 units, there are 4 units on the back and front.
Now count the units between them:
There are 4 units across from them.
Add the units together:
4 + 4
= 8, there are 8 units in total shown in this figure.
But, we need to find how many more units should be added to these 8 units to get a result of 12 units altogether.
So, subtract the 8 units from the 12 units to get the remaining units you would need to add to 8 units to get 12.
12 - 8
= 4, you would need 4 more units so that this figure would have a volume of 12.