Question

units
18
8
original
?
4
scaled copy

Explanation:

Step1: Find the scale factor

The height of the original rectangle is \(8\) units and the height of the scaled - copy is \(4\) units. The scale factor \(k\) is calculated by dividing the dimension of the scaled - copy by the dimension of the original. So, \(k=\frac{4}{8}=\frac{1}{2}\).

Step2: Calculate the length of the scaled - copy

The length of the original rectangle is \(18\) units. Let the length of the scaled - copy be \(x\). Using the formula \(x = 18\times k\), substitute \(k=\frac{1}{2}\). Then \(x = 18\times\frac{1}{2}\).

Answer:

\(9\)