Which two consecutive whole numbers does StartRoot 39 EndRoot lie between? Why? 5 and 6 because 39 falls between 52 = 25 and 62 = 36. 4 and 6 because 39 falls between 42 = 16 and 62 = 36. 6 and 7 because 39 falls between 62 = 36 and 72 = 49. 5 and 7 because 39 falls between 52 = 25 and 72 = 49.