ⓘ Diameter. In geometry, the diameter of a circle is a line from one side directly to the opposite side through the centre. It can also be defined as the longest ..

ⓘ Diameter

In geometry, the diameter of a circle is a line from one side directly to the opposite side through the centre. It can also be defined as the longest chord of a circle. The same explanations can be also used to describe the diameter in a sphere.

The letter d or the symbol ⌀ are often used as a symbol for the diameter. The diameters length is often called the diameter itself.

The diameters length is twice the radius, and therefore the relationship between the diameters length and radius can be shown with the equations:

d = 2 r {\displaystyle d=2r} and r = d 2 {\displaystyle r={\frac {d}{2}}}

• 160 km diameter 2023 million years ago. Chicxulub crater, Mexico: 150 km diameter 65 million years ago. Sudbury Basin, Ontario, Canada: 130 km diameter 1850
• mathematical constant that is the ratio of a circle s circumference to its diameter This produces a number, and that number is always the same. However, the
• or caliber in American English is the diameter of the barrel of a gun. For example, a rifle with a diameter of 0.22 inch is a 22 cal. Guns that have
• Aegaeon is a small moon of Saturn, only half a kilometer in diameter It was discovered in 2009 from images dating from 2008. This short article about
• Observatory. It is probably about 600 km in diameter across although it may be up to 800 km in diameter The moon was named Dysnomia from the Ancient
• 2004, the same time as a close - by moon, Pallene. It is only about 3 km in diameter This short article about science can be made longer. You can help Wikipedia
• between two larger moons, Mimas and Enceladus. Pallene is about 4 km in diameter This short article about science can be made longer. You can help Wikipedia
• Polydeuces is a small moon of Saturn. Its diameter is only 3.5 km. It shares its orbit with larger moon Dione. It was discovered by the Cassini Imaging
• Daphnis is a moon of Saturn. It is a tiny moon, measuring 6 to 8 km in diameter It is discovered by the Cassini - Huygens space probe in 2005. It orbits
• the most famous is the Herschel crater. It is 130 km 80 mi in diameter The diameter of Herschel is about 1 3 of Mimas. If a comet or asteroid that hit