Question

scale 1 in : 5 ft answer the following. (a) the wingspan of the real airplane is 45 feet. what is the wingspan of the airplane in the scale drawing? 9 inches (b) in the scale drawing, the length of the airplane is 6 inches what is the length of the real airplane? feet

Explanation:

Step1: Analyze the scale

The scale is \(1\) inch : \(5\) feet, which means \(1\) inch in the drawing represents \(5\) feet in real - life.

Step2: Set up a proportion

Let \(x\) be the length of the real airplane. We have the proportion \(\frac{1}{5}=\frac{6}{x}\) (since the ratio of drawing length to real length must be equal to the scale ratio).
Cross - multiply: \(1\times x = 5\times6\).

Step3: Solve for \(x\)

\(x=5\times6 = 30\).

Answer:

\(30\)