Hope this helps :)
Answer:
The total volume is 3,680 cubic feet
Explanation:
First you find the volume of the rooms in cubic feet individually.
Mr. Tai's living room:
10 * 18 * 8
180 * 8
Mr. Tai's living room: 1,440 cubic feet
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Mr. Tai's family room:
14 * 20 * 8
280 * 8
Mr. Tai's family room: 2,240 cubic feet
Now add both together to get the total volume:
Total Volume: 1,440 + 2,240
Total Volume: 3,680