document.write( "Question 752527: An oil company distributes oil in a metal can shaped like a cylinder that has an actual radius of 5.1 cm and a height of 15.1 cm. A worker incorrectly measured the radius as 5 cm and the height of 15 cm. Determine the relative error in calculating the surface area, to the nearest thousandth. \n" ); document.write( "
Algebra.Com's Answer #457927 by Theo(13342) You can put this solution on YOUR website! surface area equals two times the area of the base plus the lateral area.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "area of the base = pi * r^2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "lateral area = 2 * pi * r * h\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "total surface area = 2 * pi * r^2 + 2 * pi * r * h\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "desired measurements are radius of 5.1cm and height of 15.1 cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "surface area with those measurements = 2 * pi * (5.1)^2 + 2 * pi * 5.1 * 15.1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this is equal to 647.2937503 square cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "actual measurements are radius of 5 cm and height of 15 cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "surface area with those measurements = 2 * pi * 5^2 + 2 * pi * 5 * 15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this is equal to 628.3185307\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the difference from the desired amount is equal to 18.97521963 square cm.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the % difference from the desired amount is equal to 3.02%\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |