document.write( "Question 1047318: A 1/2\" diameter brass rod is used in producing 500 slotted screws 1 5/8\" in length, 1/2\" diameter, with 1/8\" allowance for cutting off and finishing each screw. Determine weight of rod.\r
\n" ); document.write( "\n" ); document.write( "Brass weighs .311 lbs. per cu. in.\r
\n" ); document.write( "\n" ); document.write( "My attempt:\r
\n" ); document.write( "\n" ); document.write( "500 * .5 * 1.63 * .13 = 52.975 = 53 in.\r
\n" ); document.write( "\n" ); document.write( "The rod is cylindrical. Volume: pi * r^2 * length (or height).\r
\n" ); document.write( "\n" ); document.write( "3.1416 * .25 * .25 * 53 = 10.40 cu. in.\r
\n" ); document.write( "\n" ); document.write( "10.40 * .311 = 3.23 lbs.\r
\n" ); document.write( "\n" ); document.write( "Where am I correct ? \n" ); document.write( "

Algebra.Com's Answer #662849 by addingup(3677) $\"\"$ $\"About$

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The way I read it:
\n" ); document.write( "each screw is 1 5/8\" long + 1/8\" for finishing, so in raw form the bar stock for each screw is 1 5/8+1/8 = 1 6/8 = 1 3/4 = 1.75
\n" ); document.write( "And we have 500 screws:
\n" ); document.write( "500*1.75 = 875 inches long.
\n" ); document.write( "Diameter: 1/2 = radius 1/4 or 0.25
\n" ); document.write( "Volume: Pi*0.25^2*875 = 171.81 in^3
\n" ); document.write( "Weight:
\n" ); document.write( "171.81*.311 = 53.43 lbs is the weight of the rod
\n" ); document.write( ":
\n" ); document.write( "John \n" ); document.write( "

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