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Cylinder and Cones

Cylinder and Cones:

Cylinders are like prisms, the only difference is that instead of having polygons for a bases it has a circles for a bases. In a right cylinder, the perpendicular segment that joins the two circular bases at its centers is called the altitude. The length of the altitude is called the height of the cylinder, denoted as h. The radius of the base is also the radius of the cylinder.

Cones are similar to pyramids, The only difference is that the instead of having a polygon for a base the base of a cone is a circle. In a right cone, the altitude of a cone has a length called the height, and is a segment that is perpendicular to the base from the vertex to the center of the base. The slant height of a cone is the segment from the vertex to the edge of the base.

17cylin1

Volumes of Cylinders and Cones:

Volume of Cylinders:
V = Bh = pr²h

Volume for Cones:

17cylin2

Lateral Area of Cylinder:
L.A. = ph = 2prh

Lateral Area of Cones:
L.A. = prl

 

 

 

Subject: 
Geometry
Subject X2: 
Geometry

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