Answer:

Step-by-step explanation:
The formula for the circumference of a circle with the diameter is:

Since the diameter is 3m, solve for
:

I’m not sure just need to answer questions to help me so sorry
Answer:
it's 4.5
Step-by-step explanation:
you have to find the difference between each number and the mean. then you find the mean of that sum
A. would have the highest pitch because the sound vibration are close together and it would also be the fastest. B is incorrect because the sound waves are very which would give it a deeper voice and it would be the slowest
Hope this helps