Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes RF Cascade Workbook RF Stencils for Visio Shapes for Word - RF Cafe - RF Cafe - RF Cafe Thank you for visiting RF Cafe!

Geometry - Arcs & Circles
Here are formulas for some of the most commonly used arcs and circles. Equations for area and circumference are provided.








  K = area
  R = radius
  D = diameter
  C = circumference
  θ = central angle (radians)
Circumference of a Circle - RF CafeCircumference and Area


- RF Cafe
- RF Cafe
- RF Cafe
- RF Cafe

 
Circumference of an Ellipse - RF CafeEllipse

- RF Cafe (approx)

- RF Cafe
Circumference of an Annulus - RF CafeSector of an Annulus

  - RF Cafe
- RF Cafe
    - RF Cafe
    - RF Cafe
Sector and Segment - RF CafeSector and Segment

- RF Cafe
- RF Cafe
- RF Cafe
- RF Cafe
- RF Cafe
  - RF Cafe
- RF Cafe
- RF Cafe
- RF Cafe
                    - RF Cafe
Parabolic Segment - RF CafeParabolic Segment

K (right segment) - RF Cafe

- RF Cafe
3D Parabolic Segment - RF CafeK (oblique segment) - RF Cafe, where T is the area of the triangle
with the base along the chord of the segment and with
opposite vertex at the point on the parabola at which the
tangent to the parabola is parallel to the chord of the segment.


Source: CRC Standard Math Tables, 1987

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer
RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !