Question

sarah is recreating a triangular section in her yard. triangle a is the original design and triangle b is the scale model. what scale factor did sarah use? 20 ft a 35 ft x b 21 ft

Explanation:

Step1: Identify corresponding sides

Original side (A): $35$ ft, Model side (B): $21$ ft

Step2: Calculate scale factor

Scale factor = $\frac{\text{Model side length}}{\text{Original side length}}$
$\text{Scale factor} = \frac{21}{35} = \frac{3}{5}$

Answer:

$\frac{3}{5}$