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1 F° = 5/9 C°

1 inch = 0.0254 m

1 foot = 0.3048 m

1 lb = 0.453593 kg

1 kcal = 4184 J

I know there are conversions between BTU and joules/calories, but he says looking this up will cost us half of the question. So far all I've concluded (I think) is that the unit we need to convert is

BTU·inch / hr·ft²·F°

But I'm not sure how to get rid of the BTU without knowing a conversion factor... If I can get rid of the BTU I'm sure I'll be able to figure the rest out. Is there a way to do it without knowing anything else, maybe by using the definition of a BTU?

I'm also confused about the difference between a degree Fahrenheit (°F) and a Fahrenheit degree (F°).