document.write( "Question 280950: a circular oak table top is 4 ft. in diameter and 3/4 in. thick.How heavy is it if oak weighs 47 lb. per cu. ft.? \n" ); document.write( "
Algebra.Com's Answer #204121 by Theo(13342)\"\" \"About 
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The oak table is 4 feet in diameter.
\n" ); document.write( "This means that the radius is 2 feet.
\n" ); document.write( "The oak table is 3/4 inches thick.
\n" ); document.write( "3/4 inches thick is equivalent to (3/4)/12 feet thick which equals .0625 feet thick.
\n" ); document.write( "The volume of the oak table is given by the formula\r
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\n" ); document.write( "\n" ); document.write( "V = pi*r^2*h where:\r
\n" ); document.write( "\n" ); document.write( "pi = the constant of 3.14..... (it's in the calculator)
\n" ); document.write( "r = 2 feet
\n" ); document.write( "h = the thickness of the oak table = .0625 feet\r
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\n" ); document.write( "\n" ); document.write( "The volume of the oak table is therefore\r
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\n" ); document.write( "\n" ); document.write( "V = pi*2^2*.0625 = pi*4*.0625 = pi*.25 = .785398163 cubic feet.\r
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\n" ); document.write( "\n" ); document.write( "If the oak table weighs 47 pounds per cubic feet, then the table top weighs 47 * .785398163 = 36.91371368 pounds.\r
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