(a) Find the average rate of change of the area of the circle with respect to its radius as changes from: (i) 2 to 3, (ii) 2 to 2.5, (iii) 2 to 2.1
(b) Find the instantaneous rate of change when . [Do you notice anything interesting about the formula of ?]
**Please leave all your answers in terms of "pi".**
(a) (i) (ii) (iii)
(b)
You can earn partial credit on this problem.