PLS HELP!! DUE SOON!! GIVING BRANLIEST TO THE BEST CORRECTT ANSWER!!!
A manager learns that a go-kart manufacture offers 3 different tracks. ALl tracks are rectangular. Scale drawings of the track are shown below.

Track L (6 in by 9 in) Track M (4 in by 7 in) Track N (12 in by 18 in)

Part A: Which of the tracks, if any, are similar?
Part B: The scale for Track L is 3 in:70 ft, Track M is 1 in:50 ft, and Track N is 3 in: 50 ft. Find the actual length and width of each track in feet.