Question 1181645
Outer volume - inner volume = volume of copper.
Volume of copper * density of copper = weight of copper

outer radius = 2 "

inner radius = 2- 0.05 = 1.95 "

Volume of copper= (4/3)*pi * (2-1.95)^3

V= 0.000523 in^3

556 lb/ft^3= 5.15 ounce/in^3

Weight of copper = 0.000523* 5.15 
= 0.0027 ounces