[check my work ]
A cylindrical container, with a volume of 4000cm³ is being constructed to build candies. The cost of the base and lid is $0.005/cm², and the cost of the side walls is $0.0025/cm². Determine the dimensions of the cheapest possible container.
Okay so I finished the problem and got the right radius but i'm having problems finding the height !
u can rewrite h as a function of r
or r as a function of h and substitute into 2nd equation and take the derivative solve for the critical points, and see what dimensions minimize cost
I don't know what the above discussion is going into, but if you have found out the radius, just substitute the value in pi*r^2*h = 4000 since the volume of cylinder is given by pi*r^2*h...