The width of a rectangle is 6 2/3 inches. the length of the rectangle is twice its width. what is the perimeter of the rectangle? a) 20 inches b) 40 inches c) 30 2/3 inches d) 88 8/9 inches

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 : )