It is 1a over bd and 8 over k
I'm not 100% sure what this all means because I'm in a different school but, I believe they have a side length of 4600.
P.S. If it doesn't work, I am so sorry
Answer U/25=13
U=13 divided 1/25
U=13 multiply 25
U=325
The same with this question you divide 60 by 6 and you get 5