Answer: To estimate this, we need to estimate the average winter snowfall and the area that is plowed or shoveled. In the areas where it snows, the average snowfall is more than 0.1 m (4 in) and less than 10 m (30 ft), so we will take the geometric mean and estimate 1 m. That was the easy part.
Now we need to estimate the total cleared area. We shovel (or snowblow) sidewalks and driveways and we plow streets. Since the street area is much larger than the sidewalk and driveway area, we will just estimate the street area.
We can either try to estimate the total road area or the per capita road area. Let’s consider the total road area first. The east-west road density will be more than one per 10 km and less than one per 0.1 km, giving an estimate of one per km. If each...