Q$2$ For a system of $128$ cells, with a cell radius of $0\mathrm{.}8$ km and a total frequency bandwidth that supports $336$ traffic channels, and a reuse factor of N$=7$

a$)$ Calculate the size of every cell $?$

b$)$ Compute the total geographic area covered by the system?

c$)$ Find out how many channels are there per cell?

d$)$ Compute the total number of concurrent calls that can be handled by the system?