Respuesta :
The plane would be 48 feet long in actually by using the proportion of 8/x(length) equals 1/72(same as ratio).

Answer:
The actual airplane 576 feet long
Step-by-step explanation:
Given :A model airplane is built at a scale of 1:72
To Find : if the model plane is 8 inches long, how many feet long is the actual airplane?
Solution :
A model airplane is built at a scale of 1:72
Length of model plane = 8 inches
1 inches = 72 inches
Actual length of airplane = [tex]8 \times 72[/tex]
= [tex]576 feet[/tex]
Hence The actual airplane 576 feet long