Q2 the original cell size (actual size) was 26nm
the magnified cell size was 728nm
(a) calculate the total magnification of the cell
the eyepiece magnification is 4, calculate the objective lens
magnification

Green pods should be the a, c, d.

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it