the formula for calculating the volume of a circle is r * pi * h * s.g.
R= radius in cm
pi = 3.1415
h = hight in cm
s.g. = specific gravity for the metal
r = 0.15 cm
h = 7.4 cm
(0.15)" x 3.1415 = 0.0706 cm2
0.0706 x 7.4 = 0.5230 cm2
0.5230 x 10.3 = 5.387 gr for STERLING silver
Make sure that you have the exact dimensions because it makes a
different as I’ll show you.
r = 0.14 cm
(0.14)" x 3.1415 x 7.4 = 0.4556 cm2
0.4556 x 10.3 = 4.693 gr for St silver
… and this is only 0.1 mm or 0.069 gram of st silver which is
not a big deal for silver but for other more expencive metals it
matters. This whould be 16.6 US$ without labor costs and alloy
metals. However, it depends on how you look at it and how you need to
do your calculations in order to run your business.
Have fun and enjoy