A given circular shaped city has a city radius of 5 km. a. If the population density at the center of a circular city is 200 person/hectare and the density decreases uniformly to the edge of the city, where it is 5 person/acre. what is the approximate population of this city? (2 Points) b. If the population density varies with distance from the city center as per the basic equation of density-distance relationship provided below, what is the approximate population of this city? (3 Points) do = de bx where: d = density (persons/hectare) x = distance from the city center (kilometers) b = density gradient