A Thin Wire Has a Length of 21.7cm and Radius 0.46mm. Calculate the Volume of the Wire To Correct Significant Figure.
Length of wire (l)=21.7cm and radius (r)=0.46mm=0.046cm[As1mm=0.1cm]
As the volume of wire =volume of cylinder=πr2l[hereh=l]
So, the volume of wire =227x0.0462x21.7
Hence the volume of the wire to correct the significant figure is 0.14cm3