Question

PLEASE HELP

Find the length of BC

Answer 1

BC or n=72

Explanation:

ABC≈DEF

`(AB)/(DE) =(BC)/(EF)=(AC)/(DF)=k`

`(54)/(9) =(n)/(12)`

`9n=54*12`

`9n=648` (then divide both sides by 9.)

`n=72`