Answer:
Hi
Step-by-step explanation:

in this formula
d is diameter
v is circumference
because the question asked the answer in terms of pi so we write the pi its self
hope this help you
god bless you and us
The answer is the first one
Answer:
The answer is D!!!
Step-by-step explanation:
In the attachment!
I plugged in that equation into a graphing calculator and got this....
since it's also a (<, >) sin, we know that it's dotted.....
Hope this helps!