I have this problem from my pre-calculus class, but I really don't get it. I guess I should use the first derivative criteria, but I don't know how I can get there.
Please
A large conical tank will be manufactured with a circular metal piece with a radius of 10 meters, cutting a sector with an angle u and then welding the straight sides of the remaining piece. Find u so that the resulting cone has the largest possible volume.
I know the volume of the cone is V= 1/3 pi r^2 (h) and the last steps I should do, the problem is I don't have any idea about where to start.
Please
A large conical tank will be manufactured with a circular metal piece with a radius of 10 meters, cutting a sector with an angle u and then welding the straight sides of the remaining piece. Find u so that the resulting cone has the largest possible volume.
I know the volume of the cone is V= 1/3 pi r^2 (h) and the last steps I should do, the problem is I don't have any idea about where to start.
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