What is the volume of the composite figure?

Answer:
6000 units^3
Step-by-step explanation:
Bottom: rectangular prism
V = LWH = 20 * 15 * 12 = 3600 units^3
Top: triangular prism
V = AH = (1/2)bhH = (1/2)(15)(16)(20) = 2400 units^3
Total volume: 3600 units^3 + 2400 units^3 = 6000 units^3