Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. -
Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German. Mean line confidence on this page: 0.86.
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The machine reads it as
- P
- 2. For au Parallelorrams, mulciply etil P’expen-
- upon; and che Product is thie Area. Becaule alI
- Becaule char Line will be equat lohe heishl
- Such Ligures are equal ro Rllates et le Tae eta LdI.
- or equal Bale and Alcicude.
- 3. For al Plane Friancles, muloiply hale che
- Perpendicular ler tall trom any Ansie, by the
- oprolice le, or halfchac lde by che Perpendicu
- lar, and che Produet is che lue ea; because
- Trianoles are chehalves ol Paralleux rams ot che
- lame or equal Bales and Alcirudes.
- For a Prapezium, Where wo illes are Pa
- rallel, mulciply che dumm ol che Lalalles lde
- (b and a) by halt (p) che Leeat.
- dicular lec fall trom any side, by che side ic Falls ot each Triansle in che Polyson, and cheir Bales
- wilt be allo equal, because chey are sides ot 2
- Thus in a HexaCON, WI
- and ehe Distance som the
- ot any otche sices 10 Xards
- The Summ Ol C siueS
- Side is 8 Yards.
- onter r0 che Midale
- 6X8 = 48. votose
- halt is 24. Which mulciplied by 10 produces 240
- 5. For any other Traxezium or any Multane ula
- Plane Figure, resolve it Diagonally into Lrian
- oles; and add the Areas oF thole Triangles
- (Found by che 3d Problem) into onc summ
- ivtich will be che erue Area of che whole. Lhu
- suppose a Trapezium whole Sides are nol paralle
- divide it into uvo Triangles by a Viapota
- and lec fall a perpendicular trom che othor Ansie.
- therero; then multiply che whole Base b
- BalE che Summ, (or BalF che Bale by l
- aote ot che Perpendieutat, Lbuur
- Pards, che area ot che exacon
- 7. For all Circles, mulrixly hals rhe Circumte-
- rence by che Radius; because every Cirele is e.
- Quat 10 d heclanele L, one ot vitole Lcgo o ce
- Periphery, and rhe ocher ihe Radius. AS Archi
- medes Hac detonacca. For Practice, meature
- the Semi-diamerer, then (ay, 25 100O, ZTAY 3 2
- (0 is the Semi diamerer ro che Circumference:
- ewhich found, mulciply by halt che Diamerer (OF
- Radius) che Produet is che Area.
- 8. For a Sector of a Circle, mulriply che Radius.
- or one oF its Leos By HaIF hC ArCH, (Or BaIE chC
- IS ThC, ea.
- Base 24, ie5 haIF
- Summ ot che Perpend. 12, its t3lE 5, 5.
- 90
- hacius by chc whole Areh ihe Produet Biveo EC
- Content.
- che Sector Mnhuine onche arke and allo che Area ot
- che Trianele, and Cubtctact enal et uns
- 9. for au Segments of Circles, cu sred bi
- Erom hac ot he Sector, al LLCI Id EK Is CIC Lat
- OE hC Serment.
- 1D. For an Ellipsis, mulciply che longe Ba
- merer by the Morrell, and exrract the square
- Root oF the Product, ic sires che Diamerer ot
- Circle whole Area is equal eo the Area oF the FI
- C s
- lipsis; because che Diamerer of such a Circle i
- mean Proporrional olneen ine aclesot
- AI. For a Parabola, mulriply the eneire Ordi-
- a L Laa, 2 daxtim coloured
- Circle abour che Nixpte
- nare by the Abscissa or intercepted AX; chem
- double chac Prodult, and divide che holeby
- S. For all Repular Fieures or Polysons, mulci
- ly che hale summ ot aIl the Sides, by che
- lenech oF a Line dravn From che Centet W chc
- midate ot any one Side, che L SIres EHC
- Area
- the Ouollene 1InC Area
Cite
Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. - . Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/806933011:0083?run=74