I am very confused when it comes to related rates. I am not comprehending how I need to go about solve these questions. An example problem is ...
The radius of a circular oil slick expands at a rate of 6 m/min.
(a) How fast is the area of the oil slick increasing when the radius is 20 m? (b) If the radius is 0 at time t=0, how fast is the area increasing after 3 mins?
I know that I would need to use the area of a circle formula and then differentiate implicitly but everything is still very confusing. Any guidance is appreciated.