متر مكعب
| Cubic metre | |
|---|---|
 One cubic metre of concrete (representing the world annual production per capita) (on the left). | |
| معلومات عامة | |
| نظام الوحدات | SI |
| وحدة قياس | volume |
| الرمز | m3 |
المتر المكعب بالإنجليزية Cubic metre ، هي وحدة لقياس الحجم في International System of Units (SI).[1] Its symbol is m3.[1] وتساوى حجم مكعب طول ضلعه متر واحد , أى الحيز الذى يشغله المكعب في ثلاث أبعاد. ويرمز بها بالرمز m³ أو م³. ويطلق عليها في بعض الأحيان كيلو لتر.[2]
التحويلات
1 cubic metre = 1000 litres (exactly)[3][4] ≈ 35.3146667 قدم مكعب ≈ 1.3079506 ياردة مكعبةs ≈ 6.2898108 برميل نفطs ≈ 219.96925 imperial gallons ≈ 264.17205 US fluid gallons
A cubic metre of pure water at the temperature of maximum density (3.983 °C) and standard ضغط جوي (101.325 kPa) has a mass of 1000 kg, or one tonne. At 0 °C, the freezing point of water, a cubic metre of water has slightly less mass, 999.85 kilograms.[5]
A cubic metre is sometimes abbreviated to m^3, M3, m**3, cum, m3, CBM, cbm when superscript characters or markup cannot be used (e.g. in some typewritten documents and postings in Usenet newsgroups). The "cubic metre" symbol is encoded by Unicode at code point U+33A5 ㎥ square m cubed.[6]
- اللتر = 0.001 متر مكعب.
- القدم المكعب = 0.028 316 846 592 متر مكعب.
- الياردة المكعبة = 0.764 554 857 984 متر مكعب.
- البرميل = 0.158 987 294 928 متر مكعب.
Multiples and submultiples
Multiples
- Cubic decametre
- the volume of a cube of side length one decametre (10 m)
- equal to a megalitre
- 1 dam3 = 1000 m3 = 1 ML
- Cubic hectometre
- the volume of a cube of side length one hectometre (100 m)
- equal to a gigalitre
- in civil engineering abbreviated MCM for million cubic metres
- 1 hm3 = 1000000 m3 = 1 GL
- Cubic kilometre
- the volume of a cube of side length one kilometre (1000 m)
- equal to a teralitre
- 1 km3 = 1000000000 m3 = 1 TL (810713.19 acre-feet; 0.239913 cubic miles)
Submultiples
- Cubic decimetre
- the volume of a cube of side length one decimetre (0.1 m)
- equal to a litre
- 1 dm3 = 0.001 m3 = 1 L
- (also known as DCM (=Deci Cubic Meter) in Rubber compound processing)
- Cubic centimetre[7]
- the volume of a cube of side length one centimetre (0.01 m)
- equal to a millilitre
- 1 cm3 = 0.000001 m3 = 10−6 m3 = 1 mL
- Cubic millimetre
- the volume of a cube of side length one millimetre (0.001 m)
- equal to a microlitre
- 1 mm3 = 0.000000001 m3 = 10−9 m3 = 1 μL
انظر أيضا
المصادر
- ^ أ ب Bureau International de Poids et Mesures. "Derived units expressed in terms of base units Archived 2012-07-16 at the Wayback Machine". 2014. Accessed 7 August 2014.
- ^ ويكيبديا الإنجليزية
- ^ From 1901 to 1964 the litre was defined as the volume of one kilogram of pure water at 4°C and 760 millimetres of mercury pressure: during this time, a litre was about 1.000028 dm3. In 1964 the original definition was reverted to.
- ^ "BIPM - Table 6". Archived from the original on 2009-10-01. Retrieved 2010-03-05.
- ^ "Water Density, Specific Weight and Thermal Expansion Coefficients - Temperature and Pressure Dependence". The Engineering ToolBox. Retrieved 2025-06-13.
- ^ Unicode Consortium (2019). "The Unicode Standard 12.0 – CJK Compatibility ❰ Range: 3300—33FF ❱" (PDF). Unicode.org. Retrieved May 24, 2019.
- ^ The cubic centimetre is the base unit of volume of the CGS system of units. The colloquial abbreviations "cc" and "ccm" are not SI but are common in some contexts such as cooking, engine displacement and medicine.