27.27 m
Mercury spins very slowly on its axis, once every 58.6 days relative to background stars. A solar, or apparent day on Mercury takes 176 days though, because of this slow spin relative to the time...
Usually not.
10 paper clips is 7.5 inches, so 7.5X100,000= A million paper clips
3cm times 1,000,000. So, 3,000,000cm. Ish.