Answer:
15
Step-by-step explanation:
If the other triangle is part of the problem the triangle increased by 2.5
2.5 * 6 is 15
so 15 is the length of TR
[tex]\Large \boxed{\sf 15}[/tex]
Both triangles are similar so the two corresponding sides are proportional.
[tex]\displaystyle \frac{4}{6} =\frac{10}{TR}[/tex]
[tex]TR= 15[/tex]
