Question

http://prntscr.com/9tcwz5

Answer 1

I just wanted to see if that was right

Answer 2

the scale 1:72
means if the model has a length (of say the wing) of 1 inch, then the real airplane is 72 times bigger

in other words, you multiply the models number by 72
Did you do that ?

Answer 3

Oh ok, that helped

Answer 4

in other words, you do 7.5 inches * 72
remember that number is in inches, but your answer is in feet
so you have to do another step and change inches to feet

Answer 5

Its 45 feet

Answer 6

yes