Question

on a scale of 1 = 5 is given. a line on the drawing is 4\ long. what actual dimension does this 4\ line represent?

Explanation:

Step1: Set up proportion

Let \(x\) be the actual dimension. The scale is \(1'' = 5'\), so \(\frac{1''}{5'}=\frac{4''}{x}\).

Step2: Cross - multiply

\(1\times x = 5\times4\).

Step3: Solve for \(x\)

\(x = 20\).

Answer:

\(20'\)