V=volume h=height l=length w=width
V=h•w•l
w•l=v/5
w•l=270/5
w•l=54
Since this is all we know, we can't tell what the width or length really is but we can give examples: 6 and 9 (or 9 and 6), 4 and 13.5 (or the other way round), 18 and 3 (or 3 and 18), 2 and 27 (or 27 and 2).
Answer:
BC or n=72
Step-by-step explanation:
ABC≈DEF



(then divide both sides by 9.)

Each column is a digit, and the top two beads each represent 5 and the bottom 5 beads each represent 1. To read it, you add up the values of the "top" beads that are dropped down and the "bottom" beads that are raised up, and you read the number left to right.