Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Innovative Power Products Passive RF Products - RF Cafe

everythingRF RF & Microwave Parts Database (h1)

PCB Directory (Manufacturers)

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Exodus Advanced Communications Best in Class RF Amplifier SSPAs - 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

Exodus Advanced Communications Best in Class RF Amplifier SSPAs - RF Cafe
Innovative Power Products Passive RF Products - RF Cafe

KR Electronics (RF Filters) - RF Cafe

Exodus Advanced Communications Best in Class RF Amplifier SSPAs