Question

1. a model airplane is built with a wing span of 18 inches. the actual wing span of the airplane is 90 feet. find the scale. 7.6.1

Explanation:

Step1: Convert actual wing span to inches

Since \(1\) foot \( = 12\) inches, the actual wing span of \(90\) feet is \(90\times12=1080\) inches.

Step2: Calculate the scale

The scale is the ratio of the model's wing span to the actual wing span. The model's wing span is \(18\) inches and the actual is \(1080\) inches. So the scale is \(\frac{18}{1080}=\frac{1}{60}\)

Answer:

The scale is \(1:60\)