Several items have cylinder shapes, including a battery, a roll of toilet paper, an aerosol can, and numerous glasses and cups. A three-dimensional object known as a cylinder has straight sides and two round bases.
Vases, jars, and planters are sometimes cylindrical, but occasionally the sides taper in or out. Cylinders also include segments of tube or pipe that are straight. Numerous candles, including votives, long dinner candles, large, fragrant candles with a lengthy burn time, and single birthday cake candles, are also cylinder-shaped.
Many objects, including pens, pencils, markers, glue sticks, spools of thread, poles, test tubes, fire extinguishers, wires, and even coins, are essentially cylindrical in shape. Cylindrical objects include graduated cylinders. Other examples of cylinders are yo-yos, lipstick containers, chalk, water bottles, salt shakers, medication bottles, desktop pencil holders, and circular boxes.
Tree trunks, flower stems, and roots all typically have cylindrical forms. Cylinders called pistons are an essential part of any reciprocating engine. Although people frequently mistake tyres for being spherical, they are actually cylindrical because of their flat sides.
In a cylinder, either the base diameter is greater than the side diameter, in which case it will be short and wide, or the base diameter is greater than the side diameter, in which case it will be long and thin.