Please help. I don't know the answer to this

Answer:
107939 BTU
Step-by-step explanation:
We have a tank with a volume of 43.7 ft³ and propane that has the heat energy of 2470 [tex]\frac{BTU}{ft^{3} }[/tex]
In order to figure out how much energy the propane tank can produce, we need to multiply these two values together