Prismatoid

#1: 03:14 - A solid has a circular base of radius 20 cm. Find the volume of the solid if every plane section perpendicular to the base along a given diameter is an equilateral triangle
#2: 08:21 - A solid has a circular base of radius 20 cm. Find the volume of the solid if every plane section perpendicular to the base along a given diameter is a square.
#3: 11:07 - A wedge is cut out of a cylindrical log of radius 4” by two planes. One is perpendicular to the axis of the cylinder and the other intersects the first at an angle 30 degrees along a diameter of the cylinder. Find the volume of the cylindrical wedge using the prismatoid formula.
For the engineering board exam:
Solid Geometry Playlist: • Solid Geometry
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