Answer:
34
first of all use formula:
n(AUB)=n(A)+n(B)-n(AnB)
Answer: i dont know how exact you want it but the answer is 31.4159265359
Step-by-step explanation: you have to double the raduis and multiple buy pie.
You can’t really know the y value unless you’re told that they’re both directly proportional. if so, then check out the pic