Question: [This question about the sun's circumference](https://physics.stackexchange.com/questions/68120/how-is-suns-equatorial-circumference-measured/68125#68125), I answered with what I *thought* was a helpful answer - it seems that a couple of others found it useful (2 upvotes), but I am getting grief about the answer being "while strictly correct, but is enormously unsatisfying".

Why not then, if an answer is "enormously unsatisfying", post n alternative answer?

What have I done wrong this time?

Answer: 
Nobody downvoted your answer. That indicates that nobody thought it was unhelpful; on the other hand, two people thought it *was* helpful. So honestly, your complaint is without merit. If people actually think something is wrong with your answer, they'll downvote it.

Also note that posting an unsatisfying (or unhelpful, wrong, etc.) answer is not technically *wrong*, in the sense that it's not against the rules here. So you haven't *done* anything wrong.

By the way, keep in mind that if e.g. I find another person's answer unsatisfying, inadqeuate, wrong, or so on, that has no bearing on whether I should post my own answer. The argument "don't criticize me if you can't do better" holds no water on this site.
I guess the unsatisfying bit is the inclusion of "Distance from Earth to the Sun" in the formula.

I agree that the question is a bit unclear in this aspect; I think it's trying to ask "how was the Sun's diameter *first* measured". From this point of view, talking about the E-S distance just raises another question "how was the E-S distance calculated?"

To make a rough analogy1, this is similar to being asked "How can I calculate the circumference of the Earth", and answering "Multiply the diameter by $\pi$". Again, this is strictly correct, but not really satisfying.

1. I've tried to make the issue clearer in this analogy by exaggerating the situation. I've found that folks sometimes easily get offended by such exaggerated analogies, so I'm just mentioning that I don't mean to offend here :)