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Solids

A solid is a three-dimensional object with no empty space. In this chapter, we will look at a few different types, including prisms, cones, cylinders, and pyramids. Further on, formulas for calculating the volumes of different solids are presented. We will also go through cross sections of solids.

Solids are divided into different types, all with different types of characteristics. If the faces of a solid are all polygons, the solid is referred to as a polyhedron.

The chapter also discusses cross-sections of solids which is the intersection between a plane and a solid. Most often, we can get different types of cross-sections from the same solid. For instance, in a cylinder, the cross-section could be a rectangle, but it could also be a circle.

The chapter also investigates volume of solids and how to find the volume of composite solids. This is a solid that is made of or more solids. The volume of a composite solid is either the sum or difference between individual solid's volume.

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