document.write( "Question 174449: A cylinder with a diamter of 10 centimeters and a height of 20 centimeters is cut in 1/2 horizontally. What is the difference between the combined total surface areas of the 2 newly created cylinders and the total surface area of the original cylinder? \n" ); document.write( "
Algebra.Com's Answer #129440 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A cylinder with a diamter of 10 centimeters and a height of 20 centimeters is cut in 1/2 horizontally. What is the difference between the combined total surface areas of the 2 newly created cylinders and the total surface area of the original cylinder? \n" ); document.write( "-------------- \n" ); document.write( "Ignoring the width of the cut (it can be zero in a math problem): \n" ); document.write( "The difference is the area of 2x the cross-sectional area of the cylinder. Two (2) new circular areas are created, so 2*pi*r^2 is added to the total surface area. \n" ); document.write( "That is the difference, before and after: 2*pi*r^2 = 2*pi*5^2 \n" ); document.write( "= 50pi sq cms \n" ); document.write( "=~ 157 sq cms \n" ); document.write( " |