Chris is reading a book that has 364 pages she reads 3/4 of them then put the book away for a week then she read 3/7 of the remaining pages how many pages were left to read

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )