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sure, the answer might seem counter-intuitive but the method to find the answer is not, as long as you know the connection between a circle's circumference and its diameter

I still fail to see how this is relevant for a technical interview, assuming that we're trying to hire a software engineer. Fun, but not relevant.

Hah, I just did the math on this myself, found the answer to be 0.955 feet, and assumed I had done something wrong, or was off by a factor (or two or three) of ten.

That is unexpected!

It helps me to think about it in opposite terms. You're increasing the radius by ~1ft (radius around the whole earth), and 2pi is the linear relationship with circumference, so you'll get six ft. Thinking about it this way kind of ignores the fact the circle is huge. I'm not too visual of a person though.