File:01-Kreisur-Quadrat-wiki.svg
![File:01-Kreisur-Quadrat-wiki.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/01-Kreisur-Quadrat-wiki.svg/428px-01-Kreisur-Quadrat-wiki.svg.png?20200331222919)
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Summary
[edit]Description01-Kreisur-Quadrat-wiki.svg |
Deutsch: Tranformation Quadrat in Kreis:
Aus einem gegebenen Quadrat wird ein Kreis mit nahezu gleichem Flächeninhalt konstruiert. English: Transformation square in circle: For a given square a circle is constructed with almost the same surface area. |
Date | |
Source | Own work |
Author | Petrus3743 |
SVG development InfoField |
Konstruktion
[edit]Die gepunktete Linie ab Punkt G sowie der Punkt J, dienen als Hilfe für die Berechnung des Radius r.
- Konstruiere ein Quadrat ABCD, dessen halbe Seitenlänge gleich EM ist.
- Bestimme die Strecke EF, sie ist ein Sechstel der Strecke EM.
- Zeichne einen Kreisbogen um den Mittelpunkt M mit dem Radius EM ab E.
- Errichte eine Senkrechte auf EM in F bis sie den Kreisbogen um M in G schneidet.
- Zeichne einen Kreisbogen um D mit dem Radius |DG| ab G bis er die Strecke AD in H schneidet.
- Verbinde den Punkt H mit M; die Strecke HM ist der gesuchte Radius r.
- Zeichne abschließend einen Kreis um den Mittelpunkt M mit dem Radius r.
Konstruierter Radius des Kreises
[edit]
Hierzu siehe auch: Mathematik... Näherungskonstruktionen: Die Kreisur des Quadrates
Fehler
[edit]Bei einem Quadrat mit der Seite s = 1 [LE]:
- Konstruierter Radius r = 0,564189924824387...[LE]
- Soll-Radius rs =
= 0,564189583547756...[LE]
- Absoluter Fehler = r - rs = 0,000000341276631... = 3,412...E-7 [LE]
- Mit konstruiertem Radius r erzeugte Kreisfläche A = r2 •
= 1,000001209794523... [FE]
- Soll-Kreisfläche As = 1,0 [FE]
- Absoluter Fehler = A - As = 0,000001209794523... = 1,209...E-6 [FE]
- Bei einem Quadrat mit der Seite s = 10 km wäre der Fehler des Radius r ≈ 3,4 mm
- Bei einem Quadrat mit der Seite s = 1 m wäre der Fehler der Kreisfläche A ≈ 1,2 mm2
Licensing
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File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:29, 31 March 2020 | ![]() | 428 × 427 (23 KB) | Petrus3743 (talk | contribs) | Konstruktion vereinfacht |
10:13, 18 October 2014 | ![]() | 545 × 502 (23 KB) | Petrus3743 (talk | contribs) | Reverted to version as of 09:46, 18 October 2014 | |
10:12, 18 October 2014 | ![]() | 545 × 502 (30 KB) | Petrus3743 (talk | contribs) | Reverted to version as of 09:38, 18 October 2014 | |
09:46, 18 October 2014 | ![]() | 545 × 502 (23 KB) | Petrus3743 (talk | contribs) | Grafikfehler bei r ≈ <math>\sqrt{\frac{1}{\pi}}</math> | |
09:38, 18 October 2014 | ![]() | 545 × 502 (30 KB) | Petrus3743 (talk | contribs) | Konstruktion vereinfacht | |
00:10, 18 October 2014 | ![]() | 545 × 540 (30 KB) | Petrus3743 (talk | contribs) | Bildgröße geändert | |
20:29, 17 October 2014 | ![]() | 367 × 363 (35 KB) | Petrus3743 (talk | contribs) | Bild vergrößert, 1 Einheit 10 cm | |
20:22, 17 October 2014 | ![]() | 380 × 359 (35 KB) | Petrus3743 (talk | contribs) | Bild in Datei vergrößert, 1 Einheit 10 cm | |
20:20, 17 October 2014 | ![]() | 365 × 358 (35 KB) | Petrus3743 (talk | contribs) | Bildgröße geändert, 1 Einheit = 10 cm | |
20:15, 17 October 2014 | ![]() | 292 × 287 (35 KB) | Petrus3743 (talk | contribs) | User created page with UploadWizard |
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Width | 12.0760676750354cm |
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Height | 12.050961505232832cm |