# Cylinder

Cylinder is a three-dimensional geometric figure with parallel congruent bases. The bases can be shaped like any closed plane figure (not necessarily a circle) and must be oriented identically. **Oblique cylinder** is a cylinder with bases that are not aligned one directly above the other. **Right cylinder** is a cylinder with bases that are aligned one directly above the other.

Volume of cylinder (both right and oblique) is , where is a surface area of cylinder base and H is a distance between the bases of a cylinder (cylinder height).

Right cylinder with a circular bases is a **right circular cylinder**.

Volume of a right circular cylinder is

Surface area of a right circular cylinder is

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