Question 1082523
{{{20*36*pi*((1/8)(1/2))^2}}}, the volume in cubic inches


{{{720*pi(1/16)^2}}}


{{{45pi/16}}}, cubic inches,  8.8357  cubic inches


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{{{(45pi/16)inch^3*(0.321)(pounds/inch^3)}}}, or 2.836 pounds, or better, 2.84 pounds