document.write( "Question 753533: what is the total surface area of a cylinder with diameter 4cm and height of 20cm. please send the solution. thank you \n" ); document.write( "
Algebra.Com's Answer #458461 by malglu(63)![]() ![]() ![]() You can put this solution on YOUR website! what is the total surface area of a cylinder with diameter 4cm and height of 20cm. please send the solution. thank you\r \n" ); document.write( "\n" ); document.write( "first you need to know the circumference of the ends \n" ); document.write( "2 pi r\r \n" ); document.write( "\n" ); document.write( "2 * pi * 1/2 diameter (2) = 12.57 to 2 dp \n" ); document.write( "now multiply it by the height of the cylinder 20cm = 251.33 to 2 dp. \n" ); document.write( "now we eed to add to this 2 * the area of the circluar ends. this is pi * r^2\r \n" ); document.write( "\n" ); document.write( "so pi * 2^2 = 12.57 \n" ); document.write( "*2 = 25.13\r \n" ); document.write( "\n" ); document.write( "so total surface area is 12.57 + 251.33 = 276.46 cm ^2 to 2 dp \n" ); document.write( " |