document.write( "Question 214831: The world's longest bridge is 3 separate tunnles built side by side each is a half cylinder that is 50,000 meters long and 4 meters high. How many cubic meters of dirt had to be removed to build the tunnel? \n" ); document.write( "
Algebra.Com's Answer #162306 by Theo(13342)\"\" \"About 
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volume of a cylinder is \"pi%2Ar%5E2%2Ah\"
\n" ); document.write( "each of these tunnels is one half of a cylinder.
\n" ); document.write( "l = 50000 meters
\n" ); document.write( "r = 4 meters.
\n" ); document.write( "volume of each tunnel is \"%281%2F2%29%2Api%2A4%5E2%2A50000\" = 1,256,637.061 cubic meters.
\n" ); document.write( "3 * that = 3,769,911.184 cubic meters.
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\n" ); document.write( "that's how much dirt had to be removed.
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