PLSSS HELLPPPP I WILL HIVE BRAINLIEST!!!
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Answer:
6,000cm^3
Step-by-step explanation:
I don't know if this is correct but, volume is LxWxH and for each rectangular prism, it is 20cm x 10cm x 15cm. So each rectangular prism is 3,000cm^3 and you add them together, you get answer.