Asked by Matthew
Use cylindrical shells to find the volume V of a right circular cone with height 7h and base radius 4r.
Answers
Answered by
drwls
I don't see why you need calculus for this, nor why they are calling the height 7h and the radius 4r.
The differential volume of any cylindrical shell of radius r, height h and thickness dr is
2 pi r h dr
Integrating that from r = 0 to the outside radius R will give you the volume.
The differential volume of any cylindrical shell of radius r, height h and thickness dr is
2 pi r h dr
Integrating that from r = 0 to the outside radius R will give you the volume.
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