SOLUTION: 2. Concentric circles are formed when a stone is dropped in a pool of water. a) What is the average rate of change in the area of one circle with respect to the radius as the ra

Algebra ->  Rate-of-work-word-problems -> SOLUTION: 2. Concentric circles are formed when a stone is dropped in a pool of water. a) What is the average rate of change in the area of one circle with respect to the radius as the ra      Log On


   



Question 1162478: 2. Concentric circles are formed when a stone is dropped in a pool of water.
a) What is the average rate of change in the area of one circle with respect to the radius as the radius grows from 10 cm to 50 cm?
b) How fast is the area changing with respect to the radius when the radius is 75 cm?

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


a)



Average Rate of Change:



b) Instantaneous rate of change:




John

My calculator said it, I believe it, that settles it