320 because you added the two numbers to get the total.
Answer:
5
Step-by-step explanation:
Pretty self-explanatory
I need to see the diagram in order to answer your question.
Answer:
600 ft³
Step-by-step explanation:
Base area: B
Base is triangle
base = 12 ft and height = 5 ft
Area of triangle = B = 

H = 20 ft
Volume = B * H
= 30 * 20
= 600 ft³