Calculus Maximum Volume in Conical Cup constructed from a circular piece of paper IB Test

Trapezoid Trough Rate of Change of Height: • Find Rate of Change of...
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[@fcar851]

Anil ..Can you please show how to calculate the angle theta ' in degrees' of sector you remove from the Radius 5 disc... that gives the constructed cone ...that Max Volume you calculated ?
Also.. can you please explain if .. that angle theta will be the same degree value no matter what the Radius value is of starting disc of paper...(R=5...or R=8...etc. ).. ?
Thank you ….your video lessons are so very helpful
and easy to follow!

[@mr.premsta6200]

Hi, how would you calculate the angle that’s been cut out?

[@j-jeya7010]

Mali ka gyud shota be