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Diameter is measured linearly so officially, it would be meters. However any unit derived from the meter (cm, mm, etc.) would also be acceptable. New: Let's start off with the smallest practical metric unit of length, the millimerte (mm).

One inch contains 25.4 mm.

10 mm is equal to one centimetre (cm) or 2.54 inches

100 cm is equal to one metre (m) or 1.09 yards

1000 m is equal to one kilometre (km) or 0.62 miles

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a kilometer or a meter

143

143? Wossat?

The Earth's diameter would be quoted in kilometres (km).

Incidentally the metre was originally chosen as a fraction of the planet's polar circumference - not bad given the difficulty of measuring that at the time1 Then it became related to a standard bar kept in Paris. Now it's a multiple of wavelengths of light of a certain frequency - I don't know which but think it may be of sodium.

The question does not make sense. The phrase "inch dia to meter" is nonsense. Further more, if it was a failed edit of "inch to diameter" it still does no make sense. That is like asking to convert inch to length.

It doesn't matter whether you measure a diameter, or something else. To convert inches to metric units, you can:* Multiply by 25.4, to convert to mm

* Multiply by 0.0254, to convert to meters

SI unit of length is meter

Of which the millimetre and kilometre are the "preferred" divisions and multiples respectively, not centimetres.

Diameter is a length or distance. The unit of length is the meter.

'Diameter' is just a length. In metric units, it can be millimeters, centimeters, meters, kilometers, etc.

Diameter is a length. The basic SI unit of length is the meter.

meter

centimeters

Q: What is the SI unit for diameter of an object?

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I believe that it will be meter. SI unit goes by 10's. what is the sI unit for lengthThe basic SI unit of length is meter.the basic si unit of lenght is metric.The SI base unit for length is meter. For temperature, the SI base unit is kelvin.

The SI (i.e. metric) unit is the Joule.The SI (i.e. metric) unit is the Joule.The SI (i.e. metric) unit is the Joule.The SI (i.e. metric) unit is the Joule.

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By unit of length and distance and conversion ,we can say that SI basic unit of length is meters.

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cubic meters