what is the missing length in the scaled copy? units original scaled copy

Explanation:

Step1: Set up proportion

Since the two rectangles are scaled - copies, the ratios of their corresponding sides are equal. Let the missing length be $x$. The proportion is $\frac{25}{50}=\frac{40}{x}$.

Step2: Cross - multiply

Cross - multiplying gives us $25x = 40\times50$.

Step3: Solve for $x$

First, calculate $40\times50 = 2000$. Then, $x=\frac{2000}{25}=80$.

Answer:

80