Aradical vulvectomy is the removal of greater than 80% of the vulvar area. true or false?

A radical vulvectomy is not the removal of 80% of the vulvar area, so its False.

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