I'm not sure how to do this problem?

Question

A copper refinery produces a copper ingot weighing 150.lb. If the copper is drawn into wire whose diameter is 1.25 mm, how many meters of copper can be obtained from the ingot?

Answer 1

Length in meters = mm^3/[pi x (1.25mm/2)^2)/1000mm/m

mm^3 = (10mm/cm)^3 x (150 lb x #grams/lb) / (#g of Cu/cm^3)

fill in the blanks and do the calcs.

Remember: put in the "UNITS" and see that the units cancel to give the ultimate desired units.