23.87 is the answer to your question the radius would be from the diameter
D hope this help you out because it took me a long time
Answer:
£149.5
Step-by-step explanation:

Answer: Situation A fits the equation
Explanation:
Sierra has 340 oz of water and is being filled (+) 5oz every minute(x) = Brian has a bucket with 650 oz of water and is being drain( - ) 8oz every minute(x)
total donated=amount donated per month times number of months
amount donated per month=18.18
number of months=12
total donated=18.18*12=$218.16
answer is D