document.write( "Question 1018347: A concrete pipe, 2.44 meters long has for its outside diameter 533 mm. and inside diameter of 425 mm. Find the amount of concrete used in manufacturing 1,000 concrete pipes. \n" ); document.write( "
Algebra.Com's Answer #634515 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "2.44 meters = 244 centimeters
\n" ); document.write( "533 millimeters = 53.3 centimeters
\n" ); document.write( "425 millimeters = 42.5 centimeters
\n" ); document.write( "Using outside radius (53.3/2 = 26.65 centimeters)
\n" ); document.write( "Volume = Pi x radius^2 x height(length)
\n" ); document.write( "Volume = Pi x 26.25^2 x 244 = 528199.8998 cm^3
\n" ); document.write( "Using inside radius (42.5/2 = 21.25)
\n" ); document.write( "Volume = Pi x radius^2 x height(length)
\n" ); document.write( "Volume = Pi x 21.25^2 x 244 = 346144.6056 cm^3
\n" ); document.write( "528199.8998 - 346144.6056
\n" ); document.write( "= 182055.2942 cm^3 This is the thickness of the pipe
\n" ); document.write( "The amount of concrete to make 1 pipe.
\n" ); document.write( "= 182.055 litres
\n" ); document.write( "1000 pipes = 182.055 x 1000
\n" ); document.write( "182055 litres of concrete.
\n" ); document.write( "Hope this helps :-)
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