The weight of the pipe is 2287.4gm.
<h3>What is Unit of Measurement?</h3>
It is definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
It is given,
A metal pipe is 1.4 m long
Length of metal pipe is 1.4m=1400mm
Its internal diameter is 25 mm
Radius =12.5mm
Thickness=1mm
outer radius=12.5+1=13.5mm
volume of pipe=
V=π(R²−r² )h
V=3.142(13.5²-12.5²)1400
V=3.142(182.25-156.25)1400
V=3.142(26)1400
V=114368.8
1 mm³ of the metal weighs 0.02 gm
So 1.4 m long metal weights 114368.8×0.02=2287.4gm
Hence, the weight of the pipe is 2287.4gm.
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