A right circular cylinder is to contain a fixed volume

MATHEMATICS · Single correct · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

A right circular cylinder is to contain a fixed volume VV. Let rr be the radius and hh the height of the cylinder. Which of the following relationships between hh and rr minimizes the total surface area of the cylinder? (a) h=rh=r (b) h=r2h=\dfrac{r}{2} (c) h=2rh=2r (d) h=3rh=3r

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