Yahoo奇摩 網頁搜尋

搜尋結果

  1. 1 天前 · The millimetre ( SI symbol: mm) is a unit of length in the metric system equal to 10−3 metres ( 1 1 000 m = 0.001 m ). To help compare different orders of magnitude, this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm). 1.0 mm – 1/1,000 of a metre.

  2. en.wikipedia.org › wiki › PiPi - Wikipedia

    4 天前 · e. The number π ( / paɪ /; spelled out as " pi ") is a mathematical constant that is the ratio of a circle 's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics.

  3. 其他人也問了

  4. 4 天前 · In mathematics, the concept of a measure is a generalization and formalization of geometrical measures (length, area, volume) and other common notions, such as magnitude, mass, and probability of events. These seemingly distinct concepts have many

  5. en.wikipedia.org › wiki › EllipseEllipse - Wikipedia

    2 天前 · A string is tied at each end to the two pins; its length after tying is . The tip of the pencil then traces an ellipse if it is moved while keeping the string taut. Using two pegs and a rope, gardeners use this procedure to outline an elliptical flower bed—thus it is called the gardener's ellipse .

  6. en.wikipedia.org › wiki › TigerTiger - Wikipedia

    1 天前 · Bengal tigers average a total length of 3 m (9.8 ft), with males weighing 200–260 kg (440–570 lb) and females weighing 100–160 kg (220–350 lb). Island tigers are the smallest; the Sumatran tiger has a total length of 2.2–2.5 m (7 ft 3 in – 8 ft 2 in) with a weight of 100–140 kg (220–310 lb) for males and 75–110 kg ...

  7. en.wikipedia.org › wiki › USBUSB - Wikipedia

    2 天前 · USB 2.0 provides for a maximum cable length of 5 meters (16 ft 5 in) for devices running at high speed (480 Mbit/s). [88] The USB 3.0 standard does not directly specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with AWG 26 wires the maximum practical length is 3 meters (9 ft 10 in).

  8. en.wikipedia.org › wiki › RussiaRussia - Wikipedia

    2 天前 · RU. Internet TLD. .ru. .рф. Russia, [b] or the Russian Federation, [c] is a country spanning Eastern Europe and North Asia. It is the largest country in the world by area, extending across eleven time zones and sharing land borders with fourteen countries. [d] It is the world's ninth-most populous country and Europe's most populous country.