Answer:
Step-by-step explanation:
How
Many tress there were a long time ago
Each of A, C, and D are rational, so presumably B is the answer here.
A is rational, since

, so

.
C is also rational. If

, then

. This would mean

, and so

.
D is rational by a similar argument. If

, then

. So,

, which means

.
Answer: the answer is 36
Step-by-step explanation: You add all the sides together