Answer:
Option D. [tex]KR=17.2\ mm[/tex]
Step-by-step explanation:
we know that
The Centroid of a Triangle is the center of the triangle that can be calculated as the point of intersection of all the three medians of a triangle. The centroid divides each median in a ratio of [tex]2:1[/tex]
In this problem the point R represent the centroid of triangle JKL
therefore
[tex]KR=(2/3)KM[/tex]
substitute the value
[tex]KR=(2/3)(25.8)=17.2\ mm[/tex]
