A scale mode of an aircraft is 1: 78. If the wing span of the model is 35cm. Find the wing span of the real aircraft

Since the scale is 1:78 you multiply 35cm by 78 To get 2730 cm

27.3 meters or 2730 cm

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post