The scale factor of the model of the airplane is 1 feet : 15 feet.
A scale drawing is a reduced form in terms of dimensions of an original image / building / object. The scale drawing is usually reduced at a constant dimension using the scale factor.
Scale factor = original dimensions / dimensions of the scale drawing
90 / 6 = 15
1 : 15
To learn more about scale drawings, please check: https://brainly.com/question/26388230
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