Question

Find the scale factor where the pre-image is the small triangle and the image is the large triangle.

Answer 1

Answer:

The scale factor is $\frac{9}{7}$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

so

$\frac{18}{14}=\frac{27}{21}=\frac{9}{7}$

therefore

The scale factor is 9/7

Find the value of x

The value of x is equal to  

$\frac{x}{28}=\frac{9}{7}$

$x=28(\frac{9}{7})=36\ units$