Hello,

I am having a hard time solving this problem. I have no clue. None whatsover. Thanks in advance for your help.

Volume & Surface Area

The radius of a right circular cone is increasing at a rate of 6 inches per minute, and the height is decreasing at a rate of 4 inches per minute. What are the rates of change of the volume and surface area when radius is 12 inches and height is 36 inches?