document.write( "Question 1072569: A cylinder has a volume of 24 cm^3. The height of a cone with the same radius is two times the height of the cylinder. What is the volume of the cone? Thank you \n" ); document.write( "
Algebra.Com's Answer #687436 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! Cylinder is pi*r^2*h=24; therefore h=24/pi*r^2 and 2h=48/pi*r^2 \n" ); document.write( "Cone is (1/3)pi*r^3*2h. \n" ); document.write( "The ratio of the two is 3/2r. \n" ); document.write( "If the cylinder is 24, then 24/x=3/2r \n" ); document.write( "3x=48r \n" ); document.write( "x=16r, the volume of the cone.\r \n" ); document.write( "\n" ); document.write( "Check with numbers where radius is 3 and height 4 \n" ); document.write( "volume of cylinder is pi*9*4=36 pi \n" ); document.write( "volume of cone is (1/3)*pi*27*8=72pi \n" ); document.write( "The ratio of these two is 1/2, and with a ratio of 3/2r, with a radius of 3, the ratio is indeed 1/2. \n" ); document.write( "Therefore, the cone's volume is 48 cm^3 ANSWER \n" ); document.write( "-------------------- \n" ); document.write( " \n" ); document.write( " |