B is your answer to this question
I believe 3b/6a which could reduce to b/3a.
Let's convert one of these numbers:
1 foot = 12 inches
9 feet were 9*12=108 inches
so the ratio would be 42: 108
or we can simplify it: divide by 2:
21:54
divide by 3:
7:18
A ratio always stays the same no matter the unit or currency, so it doesn't matter which unit we convert it to.
There are 7 faces, 12 edges and 24 vertices in a hexagonal pyramid.