Answer: 4.73. Is correct just confirming
Explanation:
I just took the K 12 test good luck
(total number of BTUs) / (total number of cubic feet)
= (725 * 12 BTUs) / (39 * 7.25 * 6.5 ft3)
= 8700 BTUs / 1837.875 ft3
≈ 4.73 BTUs / ft3
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