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(→Den Umfang der Felge messen: weiter...) |
(→Den Umfang der Felge messen: weiter...) |
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Zeile 110: | Zeile 110: | ||
Es folgt einen Schritt für Schritt Anleitung, wie man den Umfang einer Felge misst: | Es folgt einen Schritt für Schritt Anleitung, wie man den Umfang einer Felge misst: | ||
* Das Maßband hat am Ende einen kleinen Metallwinkel, der ins [[Ventil]]loch der Felge eingehängt werden kann. dann spannt man das maßband einmal um die Felge und misst die Gesamtlänge am Boden des Felgenbetts. | |||
* | * Teile dem Umfang durch π (Gesprochen "Pi") um die Durchmesser der felge zu erhalten. Für den fall, dass Du während des Mathematikunterrichts in der sechsten Klasse regelmäßig eingeschlafen bist: π ist ein griechischer Buchstabe, der das Verhältnis zwischen Umfang zum Durchmesser eines Kreises bezeichnet. | ||
* Divide the circumference by π ("pi" in English, pronounced "pie") to get the diameter of the well. In case you were sleeping in 6th-grade math class: π is a a Greek letter denoting the ratio of the circumference of any circle to its diameter. π is a single-button function on scientific calculators, carried out to a large number of decimal places, but 3.142 is close enough if you have a four-function calculator or are working on paper. On paper, take your calculation out to tenths of a millimeter or hundredths of an inch.. | * Divide the circumference by π ("pi" in English, pronounced "pie") to get the diameter of the well. In case you were sleeping in 6th-grade math class: π is a a Greek letter denoting the ratio of the circumference of any circle to its diameter. π is a single-button function on scientific calculators, carried out to a large number of decimal places, but 3.142 is close enough if you have a four-function calculator or are working on paper. On paper, take your calculation out to tenths of a millimeter or hundredths of an inch.. | ||
* If the tape measure is divided in inches, also multiply by 25.4 to get the diameter of the well in millimeters. To make paper calculation quicker, you could combine steps 2 and 3, multiplying by 8.085. | * If the tape measure is divided in inches, also multiply by 25.4 to get the diameter of the well in millimeters. To make paper calculation quicker, you could combine steps 2 and 3, multiplying by 8.085. |