if h is the height and alpha is the semi vertical angle of a right circular cone then its volume is?
Refer the link till volume has been calculated:
https://www.meritnation.com/ask-answer/question/show-that-the-semi-vertical-angle-of-a-right-circular-cone-o/application-of-derivatives/3325362
https://www.meritnation.com/ask-answer/question/show-that-the-semi-vertical-angle-of-a-right-circular-cone-o/application-of-derivatives/3325362