help this is my last try plz helpp and give me the right answer plz im beging will do anything and these are my last points

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?