Hi there

my question is

a city is laid out in the shape of a circle with a radius of 10 km.

there is a motorway that runs from east to west of the city along the centre.

The population density at a distance y km North or South is given by the function (D)= 4y

(so most people tend to live away from the motorway).

What is the total population of the city(or how would u find it)?

Thanks a lot