paper cone
A paper cone with radius $r$ and height $h$, open on top, has fixed volume $V=355$.
What is the minimum possible surface area?
(Use $V=\pi/3\cdot r^2\cdot h$ and $SA = \pi \cdot r \cdot \sqrt{h^2 + r^2}$.)
$r =$
A paper cone with radius $r$ and height $h$, open on top, has fixed volume $V=355$.
What is the minimum possible surface area?
(Use $V=\pi/3\cdot r^2\cdot h$ and $SA = \pi \cdot r \cdot \sqrt{h^2 + r^2}$.)
$r =$