The last one is rational because it is a terminating decimal.
Step-by-step explanation:

I believe that through deductive reasoning angle O is 64 degrees. The reason is it's bigger than angle R so that rules out 32 and 16 degrees, but it's not obtuse, so that rules out 128 degrees, thereby leaving you with 64. Hope this helps :)
Answer:
not sure tbh
Step-by-step explanation: