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Q:

# How many faces does a cylinder have?

A:

A cylinder has three faces or individual surfaces. It is a tube-shaped object that is solid on both ends, rather than hollow. It has one face on each end of the cylinder and a third face that wraps continuously around its shaft.

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Each individual surface of a three-dimensional object is considered a face. Faces are separated by edges. A cube has six faces, and a pyramid has four. While the individual surfaces on cubes and pyramids are easy to count because they are flat, faces are not always flat surfaces. They can also be curved, like the third face on a cylinder. Similarly, a cone has two faces and one edge, and a ball has only one face and no edges.

## Related Questions

• A:

The volume of a cylinder refers to the amount of space the cylinder occupies. The volume of a cylinder is found by multiplying the area of the cylinder base by its height.

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• A:

Determining the volume of a cylinder and a prism require similar approaches. Both these shapes have parallel ends. However, by definition, the prism cannot have curves, so a cylinder is not a prism. Volumes are often large numbers, so a calculator is useful in calculating the volume of the prism or cylinder.

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• A:

The surface area of a cylinder is equal to the sum of the surface area of the circles on either end and the surface area of the side. The surface area of the side is equal to the product of the circumference of the circles at either end and the height of the cylinder.