Answer:
6units
Step-by-step explanation:
A=bh
54units^2=9*h
h=54/9
h=6units
6 because 9 is the length and you only do length times height and 54 divided by 9 is 6 therefore the height is 6
its a
X is the midpoint of VZ and WY
line VW is d-proportional to ZY
