Answer:
C
Step-by-step explanation:
(i think)
you ended up having = 1/n^3[1^2+2^2+3^2...(n-1)^2]
hope this helps :')
38
Let SUV be a triangle
Perimeter of SUV = SU+SV + UV
102 = 38 + 26 + UV
102 = 64 + UV
UV = 102 - 64
UV = 38
Hence the length of UV is 38
its c ! just took the test :)