What´s the temperature at a given distance from a heat source?

This is not a homework. My physics training feels like having taken place in another life, so please show mercy 🙂
I would like to know what´s the formula to calculate the temperature at a given distance from a candle. I found this:

Thermal Conductivity = heat × distance / (area × temperature gradient)

λ = Q × L / (A × ΔT)

So..say I want to know the temperature at 2 m from the candle..

temperature gradient = heat x 2m x area / thermal conductivity of the air ?

Then I just have to know how hot is my candle to get the temperature at 2 m from the candle ?

I f I am right, where do I get Q and A?

Thanks!

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

http://ift.tt/1kym51c

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