Answer:144 cubic centimeters
Step-by-step explanation:
step 1. make the shape into 3 different rectangles
step 2. multiply 6 x 4 x 3 = 72 for the bottom rectangle
step 3. multiply 4 x 4 x 3 = 48 for the middle base
step 4. multiply 4 x 3 x 2 = 24 for the top base
step 5. add all the bases up together to get 144 total cubic centimeters