Cingak wit saking Kojong

{{Orphan|date=Désémber 2020}}

[[File:Cone 3d.png|thumb|250px|right|Kojong]]
'''Kojong''' inggih punika silih tunggil pahan saking [[géométri]], kojong ipun [[limas]] istiméwa beralas bunder. Kerucut medué 2 sisi miwah 1 usuk. Kerucut madué sisi tegak marupa widang sandah (utawi selimut kerucut).

== Rumus ==
=== Jimbar alas ===
<math>L = \pi r^2</math>

=== Jimbar selimut ===
<math>L = \pi r s</math>

=== Jimbar permukaan ===
<math>L = \text{Jimbar Alas} + \text{Jimbar Selimut}</math>{{br}}
&nbsp; &nbsp; <math> = \pi r^2 + \pi r s</math>, atau{{br}}
&nbsp; &nbsp; <math> = \pi r\cdot (r + s)</math>

=== Volume ===
<math>V = \frac{1}{3}\cdot \pi r^2 \cdot t</math>

== Pustaka ==
{{Reflist}}

=== Cingak masih ===
* [[Pi]]

[[Kategori:Géométri]]