The histogram shows the heights in meters of trees in a certain section of a park. How many trees are less than 16 meters tall?

A histogram titled Heights of Trees with Height in meters on horizontal x-axis and Frequency on vertical y-axis

5

9

16

12

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?