Line segment A'B' still has a length of 4 units. When you perform the translation, all you do is move the line segment, without altering its length.
Answer:
B. 24:48
Step-by-step explanation:
3:6 is equivalent to 1:2 which is also equivalent to 24:48.
500mm is 50 cm so you can either say it is 80cm or 800mm.