Question

Determine the volume of silver needed to make the napkin ring shown out of solid silver. Give your answer in cubic millimeters. (see attachment)

Answer 1

Outer volume = 157 cubic mm
Inner volume = 56.52 cubic mm
So volume of silver needed = 157 - 56.52
= 100.48 cubic mm

Answer 2

I tried this again and got 2480 pi. ;/