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Go to the following link which will give you a better understanding of a cylinder.
Click on the following link: http://www.mathopenref.com/
Follow the following paths:
Solid Geometry > Types of solid > Cylinder > Volume of a cylinder
Solid Geometry > Types of solid > Cylinder > Surface area of a cylinder
Follow the following paths:
Solid Geometry > Types of solid > Cylinder > Volume of a cylinder
Solid Geometry > Types of solid > Cylinder > Surface area of a cylinder