How to find volume of toroid with rounded ribs? The problem I've faced is what radius should I use when I find width of small piece before integrating it from 0 to 2pi. What distance to choose: to the diameter or circle edge, or should I find the line which separate semicircle on the even parts (A=B).
2026-04-11 07:17:46.1775891866
Surface of revolution volume
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It is easier if you find the volume of the hole and subtract it from the volume of the sphere. To find the volume of the hole you need to points of intersection of the circle with the line y-h. The middle part of the hole is just a cylinder. For the corners have two integrals to evaluate.