document.write( "Question 796224: a metal pipe has thickness 3 cm and outer radius 10 cm. find the volume of metal required to cast the pipe. if the length of pipe is 5 meter \n" ); document.write( "
| Algebra.Com's Answer #481323 by Cromlix(4381)     You can put this solution on YOUR website! External volume = Pi*r^2*h \n" ); document.write( "External volume = Pi*10^2*500 \n" ); document.write( "External volume = 157079.63 cm^3 \n" ); document.write( "Inner volume = Pi*r^2*h \n" ); document.write( "Inner volume = Pi*7^2*500 \n" ); document.write( "Inner volume = 76969.02 cm^3 \n" ); document.write( "External volume - Inner volume \n" ); document.write( "157079.63 - 76969.02 \n" ); document.write( "= 80110.61 cm^3 \n" ); document.write( "Hope this helps. \n" ); document.write( ";-) \n" ); document.write( " |