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Geometry - Arcs & Circles
R = radius D = diameter C = circumference θ = central angle (radians)
K = area
 Circumference
and Area
|
 Ellipse
|
 Sector
of an Annulus
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(approx)
 Sector
and Segment
|
 Parabolic
SegmentK (right segment)
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. |
K
(oblique segment)
, where T is the
area of the triangle
Source: CRC Standard Math Tables, 1987
Copyright: 1996 - 2026 |
About RF Cafe 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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
Copyright 1996 - 2026 All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledge My Hobby Website: My Daughter's Website: |
