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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

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 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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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

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Geometry - Cylinders, Cones & Spheres

Here are formulas for some of the most commonly used cylinders, cones, and spheres, all with symmetry about the axis of rotation. Equations for surface area and circumference are provided.

    B1= area of lower base

    B2= area of upper base

    D = diameter

    h = altitude

    R = radius of base

    S = lateral surface

    s = slant length,

    T = total surface

    V = volume   

Volume and surface area of a sphere - RF CafeSphere


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Zone and Segment of One Base

 

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Volume and surface area of a sphere - zone and segment of two bases - RF CafeZone and Segment of Two Bases

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Surface area of a sphere - lune - RF CafeLune


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Volume of a sphere - spherical sector - RF CafeSpherical Sector


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Volume and surface area of a cylinder - RF CafeRight Circular Cylinder

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Volume and surface area of a right circular cone - RF CafeRight Circular Cone

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Volume and surface area of a frustrum right circular cone - RF CafeFrustum of Right Circular Cone

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Source: CRC Standard Math Tables, 1987

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