Question

mario was given the following enlargement. what is the length of side a, in centimeters? 12 15 24 33

Explanation:

Step1: Find the scale - factor

The scale - factor is found by comparing the corresponding non - parallel sides. The ratio of the larger non - parallel side to the smaller non - parallel side is $\frac{12}{6}=2$.

Step2: Set up a proportion for side A

Let the length of side A be $x$. We set up the proportion $\frac{30}{x}=\frac{12}{6}$. Cross - multiplying gives $12x = 30\times6$.

Step3: Solve the equation

$12x=180$, then $x=\frac{180}{12}=15$.

Answer:

15