A copper wire (density = 8.96 g/cm3) has a diameter of 0.19 mm. If a sample of this copper wire has a mass of 48 g, how long is the wire?



Perform the following mathematical operations, and express each result to the correct number of significant figures.
0.19*6.022*10^23

(4.0*10^4)*(5.170*10^-3)*(7.34993*10^2)

6.0*10^6/3.00*10^-7

First get the volume of the wire from the given mass and density
density = mass / volume
volume of the cylindrical wire = pi r^2h
r= radius of the wire = diameter/2
pi = 22/7
h = length of the wire
Take care of the units of the volume calculated.

I agree with you.