1. 10/22/2015 Perkins AP Calculus AB Day 11 Section 2.6

2. 1. The radius of a circle is increasing at a rate of 3 inches per second. Find the rate of change of the area of the circle when the radius is 3 feet.

3. 2. Gravel is falling onto a conical pile at a rate of 10 cubic feet per minute. The diameter of the pile is five times the altitude. Find the rate of change of the height of the pile when the pile is 10 feet high.

4. Perkins AP Calculus AB Day 11 Section 2.6

5. 1. The radius of a circle is increasing at a rate of 3 inches per second. Find the rate of change of the area of the circle when the radius is 3 feet.

6. 2. Gravel is falling onto a conical pile at a rate of 10 cubic feet per minute. The diameter of the pile is five times the altitude. Find the rate of change of the height of the pile when the pile is 10 feet high.