help pls, giving brainlist to anyone who answers. The choices are
18
54
72
150
show work pla

Answer:
54 feet
Step-by-step explanation:
We want to set up a ratio of height to shadow length.
3/5=x/90
We notice that 90 is 18 times 5
We can multiply 3/5 by 18/18 to set the denominators equal
3(18)/5(18)=x/90
54/90=x/90
54=x