Write a function for the total cost of the cylinder in terms of its radius () and its height

Step-by-step explanation:

For this case we assume that the volume of the cylinder is given by:

If we assume that we have a volume as the restriction for maximum o minimum condition we can find h in terms of r like this:

Now in order to find a function in terms of the cost for the cylinder we can use the surface area like this:

We can replace h in terms of r from the previous result:

And in order to maximize this function we can derivate S interms of r like this:

And with r we can find h replacing this:

28

step-by-step explanation:

because that's the answer

13cm

step-by-step explanation:

(apex)