Question

what is the missing length in the scaled copy? units
original rectangle: width 25, height 40.
scaled copy rectangle: width 50, height?
(image includes original/scaled rectangles and a calculator interface)

Explanation:

Step1: Find the scale factor

The original length is 25 and the scaled copy length is 50. The scale factor \( k \) is \( \frac{50}{25}=2 \).

Step2: Apply the scale factor to the original height

The original height is 40. Multiply by the scale factor: \( 40\times2 = 80 \).

Answer:

80