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A model car is a 1/43 scale model of the original car. What is the scale factor needed to find the dimensions of the original car? model car=4.2" long, 1.3"tall, and 1.6" wide?

length
(1/43)L = 4.2
L = 4.2 / 0.02326
L = 180.567 inches = 15.047 feet

Follow that pattern for the height and width.

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