Bicylinder 两圆柱相交，牟合方盖
Bicylinder (intersection of two cylinders with equal radii and whose axes intersect perpendicularly). If you move point A, the square horizontal slices let a trace. The volume is the integral of the area of this variable square section. Archimedes and Chinese mathematicians were able to compute this volume.(without integral calculus).
Bicylinder (intersection of two cylinders with equal radii and whose axes intersect perpendicularly). If you move point A, the square horizontal slices let a trace. The volume is the integral of the area of this variable square section. Archimedes and Chinese mathematicians were able to compute this volume.(without integral calculus).