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A student used the measuring instrument below to measure the thickness of a cylindrical wire. If the wire is 10cm long, determine the volume of the wire.  
measuring cylindricsl wire thickness

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Reading=(4.5+0.45)mm
         D=4.95mm
          r=2.475mm
           =0.2475cm
          v=πr2L
           =3.142 × 0.24752 × 10
           =1.925cm3

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